Matches in Ubergraph for { ?s <http://purl.obolibrary.org/obo/UBPROP_0000003> ?o ?g. }
- UBERON_0001771 UBPROP_0000003 "The eye of the adult lamprey is remarkably similar to our own, and it possesses numerous features (including the expression of opsin genes) that are very similar to those of the eyes of jawed vertebrates. The lamprey's camera-like eye has a lens, an iris and extra-ocular muscles (five of them, unlike the eyes of jawed vertebrates, which have six), although it lacks intra-ocular muscles. Its retina also has a structure very similar to that of the retinas of other vertebrates, with three nuclear layers comprised of the cell bodies of photoreceptors and bipolar, horizontal, amacrine and ganglion cells. The southern hemisphere lamprey, Geotria australis, possesses five morphological classes of retinal photoreceptor and five classes of opsin, each of which is closely related to the opsins of jawed vertebrates. Given these similarities, we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya.[well established][VHOG]" @default.
- UBERON_0001775 UBPROP_0000003 "The eye of the adult lamprey is remarkably similar to our own, and it possesses numerous features (including the expression of opsin genes) that are very similar to those of the eyes of jawed vertebrates. The lamprey's camera-like eye has a lens, an iris and extra-ocular muscles (five of them, unlike the eyes of jawed vertebrates, which have six), although it lacks intra-ocular muscles. Its retina also has a structure very similar to that of the retinas of other vertebrates, with three nuclear layers comprised of the cell bodies of photoreceptors and bipolar, horizontal, amacrine and ganglion cells. The southern hemisphere lamprey, Geotria australis, possesses five morphological classes of retinal photoreceptor and five classes of opsin, each of which is closely related to the opsins of jawed vertebrates. Given these similarities, we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya.[well established][VHOG]" @default.
- UBERON_0001782 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001783 UBPROP_0000003 "(...) we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya (reference 1); Although the eye varies greatly in adaptative details among vertebrates, its basic structure is the same in all. The human eye is representative of the design typical for a tetrapod (reference 2).[well established][VHOG]" @default.
- UBERON_0001785 UBPROP_0000003 "We conclude this section by listing some of the many synapomorphies of craniates, including (...) (5) cranial nerves (...).[well established][VHOG]" @default.
- UBERON_0001786 UBPROP_0000003 "Definition of fovea centralis should be considered here as 'an area centralis at the visual axis' (reference 1). There is an uncertaincy of the relation, because: 1.-The fovea first appeared in evolution in the temporal retina of fishes. Then, in birds, the nasal fovea and bifoveal system with nasal and temporal foveas developed. The fovea disappeared in primitive mammals, and reappeared in primates. A residue of the fovea is conserved in the visual streak, and the disappearance and reappearance of the fovea, in primitive mammals and primates respectively, correlates with degeneration and restoration of cone pigment genes in photoreceptors (reference 2). 2.-Many retinal features (foveas, trichromacy, midget pathways and associated cell types) appear specific to primates. This has led to investigations in parallel with other mammalian models such as cat or rabbit. Correlation of the results often proves to be difficult, since an evolutionary scenario with transitions between the mammalian models is largely lacking (reference 3).[uncertain][VHOG]" @default.
- UBERON_0001787 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001789 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001790 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001791 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001792 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001793 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001795 UBPROP_0000003 "(...) an essentially similar sequence of events occurs during the embryonic development of the vertebrate eye. The eye initially develops as a single median evagination of the diencephalon that soon bifurcates to form the paired optic vesicles. As each optic vesicle grows towards the body surface, its proximal part narrows as the optic stalk, and its distal part invaginates to form a two-layered optic cup. (...) The outer layer of the optic cup becomes the pigment layer of the retina, whereas the inner layer differentiates into the photoreceptive cells and neuronal layers of the retina.[well established][VHOG]" @default.
- UBERON_0001796 UBPROP_0000003 "(...) we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya (reference 1); Although the eye varies greatly in adaptative details among vertebrates, its basic structure is the same in all. The human eye is representative of the design typical for a tetrapod. (...) A watery aqueous humor fills the spaces in the eye in front of the lens (...) (reference 2).[well established][VHOG]" @default.
- UBERON_0001804 UBPROP_0000003 "(...) we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya (reference 1); Although the eye varies greatly in adaptative details among vertebrates, its basic structure is the same in all. The human eye is representative of the design typical for a tetrapod. (...) A watery aqueous humor fills the spaces in the eye in front of the lens (...) (reference 2).[well established][VHOG]" @default.
- UBERON_0001813 UBPROP_0000003 "To reach the muscles, dermatomes, and other structures of the limbs, some of the neurons in the spinal nerves come together in the plexus at the base of the limb. Such plexuses occur in all gnathostomes, and they reach their highest complexity among mammals and birds in which the cervical plexus supplies many ventral neck muscles, the brachial plexus supplies the pectoral appendage, a lumbosacral plexus supplies the pelvic appendage, and a coccygeal plexus supplies some of the pelvic muscles.[well established][VHOG]" @default.
- UBERON_0001814 UBPROP_0000003 "To reach the muscles, dermatomes, and other structures of the limbs, some of the neurons in the spinal nerves come together in the plexus at the base of the limb. Such plexuses occur in all gnathostomes, and they reach their highest complexity among mammals and birds in which the cervical plexus supplies many ventral neck muscles, the brachial plexus supplies the pectoral appendage, a lumbosacral plexus supplies the pelvic appendage, and a coccygeal plexus supplies some of the pelvic muscles.[well established][VHOG]" @default.
- UBERON_0001820 UBPROP_0000003 "Sweat glands (also called sudoriferous glands) are unique to mammals.[well established][VHOG]" @default.
- UBERON_0001821 UBPROP_0000003 "Sebaceous glands are also limited to mammals.[well established][VHOG]" @default.
- UBERON_0001831 UBPROP_0000003 "The most common oral glands in mammals are the salivary glands. There are usually three primary pairs of salivary glands, named for their approximate positions: mandibular (submandibular or submaxillary), sublingual, and parotid.[well established][VHOG]" @default.
- UBERON_0001832 UBPROP_0000003 "Most mammals have well-developed parotid, mandibular, and sublingual glands.[well established][VHOG]" @default.
- UBERON_0001840 UBPROP_0000003 "In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus. These ducts are sometimes called canals, but technically the term semicircular canal applies to the spaces in the osseus labyrinth in which the semicircular ducts lie.[uncertain][VHOG]" @default.
- UBERON_0001844 UBPROP_0000003 "Because achieving high sensitivity is generally advantageous for auditory organs, it is not surprising that evidence for cochlear amplification is also seen in nonmammals. Spontaneous otoacoustic emissions (SOAEs) are narrow-band sound signals emitted from the inner ear, and it is generally assumed that their energy derives from the hair-cell molecular motors underlying cochlear amplification. However, all terrestrial vertebrates studied so far (including amphibians) show very similar SOAEs. The most parsimonious explanation for the universality of this phenomena is that some kind of amplifying mechanism is at least as old as land vertebrates themselves.[well established][VHOG]" @default.
- UBERON_0001846 UBPROP_0000003 "The labyrinth, or inner ear, evolved very early in vertebrate history and, with many variations in configuration but none of basic design and function, has been retained by all vertebrates.[well established][VHOG]" @default.
- UBERON_0001849 UBPROP_0000003 "The labyrinth, or inner ear, evolved very early in vertebrate history and, with many variations in configuration but none of basic design and function, has been retained by all vertebrates.[well established][VHOG]" @default.
- UBERON_0001853 UBPROP_0000003 "In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus.[well established][VHOG]" @default.
- UBERON_0001854 UBPROP_0000003 "In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus. (...) In all gnathostomes, the utriculus connects ventrally with a larger sac, called the sacculus (...) .[well established][VHOG]" @default.
- UBERON_0001855 UBPROP_0000003 "In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus. (...) In all gnathostomes, the utriculus connects ventrally with a larger sac, called the sacculus (...) In most groups of gnathostomes, the caudoventral evagination of the sacculus forms a small lagena, and in some diapsids and mammals the lagena develops into a longer duct. The lagena becomes greatly elongated in therians and coils to form the cochlear duct.[well established][VHOG]" @default.
- UBERON_0001856 UBPROP_0000003 "In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus (...); Gnathostome ears have a horizontal semicircular duct. This brings their complement to three semicircular ducts, a pattern retained throughout gnathostome evolution.[well established][VHOG]" @default.
- UBERON_0001857 UBPROP_0000003 "Vertebrata is characterized by three synapomorphies. (...) Vertebrates also have at least two vertical semicircular ducts (...). In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus.[well established][VHOG]" @default.
- UBERON_0001858 UBPROP_0000003 "Vertebrata is characterized by three synapomorphies. (...) Vertebrates also have at least two vertical semicircular ducts (...). In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus.[well established][VHOG]" @default.
- UBERON_0001859 UBPROP_0000003 "Gnathostome ears have a horizontal semicircular duct. This brings their complement to three semicircular ducts, a pattern retained throughout gnathostome evolution. [ISBN:978-0030223693 Liem KF, Bemis WE, Walker WF, Grande L, Functional Anatomy of the Vertebrates: An Evolutionary Perspective (2001) p.58] ; In gnathostomes, each membranous labyrinth has three semicircular ducts that connect with a chamber known as the utriculus.[well established][VHOG]" @default.
- UBERON_0001869 UBPROP_0000003 "The presence of paired evaginated hemispheres and olfactory bulbs in both agnathan and gnathostome radiations suggests that such hemispheres were also present in the common ancestor.[well established][VHOG]" @default.
- UBERON_0001874 UBPROP_0000003 "All nuclei of the mammalian basal ganglia are also present in the oldest vertebrates.[well established][VHOG]" @default.
- UBERON_0001876 UBPROP_0000003 "One part of the striatum is called the archistriatum. (...) The archistriatum of fishes consists of several indistinctly segregated nuclei called the amygdaloid (...) complex. Tetrapods retain the structure, and in mammals the corresponding amygdala is a globular mass that tends to be ventral to the other basal nuclei.[well established][VHOG]" @default.
- UBERON_0001890 UBPROP_0000003 "In craniate embryos, neural expression of Distal-less-related genes is exclusively in the forebrain (...). Because the major neural expression domain of amphioxus AmphiDll is in the anterior three-fourths of the cerebral vesicle, we suggest that this region of the neural tube is homologous to parts of the craniate forebrain. This conclusion is strongly supported by three-dimensional, computer-assisted reconstruction of the neural tube of amphioxus based on serial transmission electron microscopy. At the neuroanatomical level, a number of detailed homologies are indicated between the anterior three-fourths of the amphioxus cerebral vesicle and the diencephalic region of the craniate forebrain. If one assumes that the amphioxus condition fairly represents the nervous system of the proximate ancestor of the craniates, one can suggest that they evolved from a creature that had the beginnings of a forebrain.[well established][VHOG]" @default.
- UBERON_0001891 UBPROP_0000003 "Fine structural, computerized three-dimensional (3D) mapping of cell connectivity in the amphioxus nervous system and comparative molecular genetic studies of amphioxus and tunicates have provided recent insights into the phylogenetic origin of the vertebrate nervous system. The results suggest that several of the genetic mechanisms for establishing and patterning the vertebrate nervous system already operated in the ancestral chordate and that the nerve cord of the proximate invertebrate ancestor of the vertebrates included a diencephalon, midbrain, hindbrain, and spinal cord.[well established][VHOG]" @default.
- UBERON_0001892 UBPROP_0000003 "Rhombomeric segmentation is found in all living vertebrates and is of fundamental importance to the development of the vertebrate head.[well established][VHOG]" @default.
- UBERON_0001893 UBPROP_0000003 "From an evolutionary standpoint, the telencephalon is the most recent brain structure: the amphioxus does not have this structure as a morphological entity. Overt telencephalon is present in the hagfish and lamprey to receive numerous input fibers from various parts of the CNS, similar to gnathostomes.[well established][VHOG]" @default.
- UBERON_0001894 UBPROP_0000003 "Fine structural, computerized three-dimensional (3D) mapping of cell connectivity in the amphioxus nervous system and comparative molecular genetic studies of amphioxus and tunicates have provided recent insights into the phylogenetic origin of the vertebrate nervous system. The results suggest that several of the genetic mechanisms for establishing and patterning the vertebrate nervous system already operated in the ancestral chordate and that the nerve cord of the proximate invertebrate ancestor of the vertebrates included a diencephalon, midbrain, hindbrain, and spinal cord.[well established][VHOG]" @default.
- UBERON_0001895 UBPROP_0000003 "The early development of most vertebrate brains is similar (...). The zebrafish neural tube follows the same basic differentiation pattern as the mammalian neural tube (reference 1); The brain develops from three embryonic enlargements of the neural tube, which later differentiate into five regions. A forebrain differentiates into telencephalon and diencephalon. The midbrain, or mesencephalon, remains undivided. The hindbrain divides into the metencephalon and myelencephalon. Cavities within the brain enlarge to form a series of interconnected ventricles (reference 2).[well established][VHOG]" @default.
- UBERON_0001896 UBPROP_0000003 "Classical anatomical studies subdivided the vertebrate rhombencephalon into pons and medulla oblongata. (...) The medulla oblongata appears therefore as a tagma, that is, a group of segmental units (pseudorhombomeres, in this case) sharing some morphological and molecular characteristics, and in some aspects different from the segmental units present in adjoining brain regions, pons and spinal cord.[well established][VHOG]" @default.
- UBERON_0001897 UBPROP_0000003 "(...) the brain regions of tetrapods, the structures they contain, and their basic organizational features are the same as in fishes.[well established][VHOG]" @default.
- UBERON_0001898 UBPROP_0000003 "For instance, the vertebrate ventral diencephalon generates the hypothalamus which functions as a major endocrine center in cooperation with the hypophysis, the anterior part of the pituitary gland, located just ventral to the hypothalamus. In the amphioxus brain, the presence of a hypothalamus-like structure has been reported associated with the ventrally located Hatschek's pit, the hypothetical hypophysial homologue. It is thus conceivable that a hypothalamus-like structure originally involved in endocrine functions may have already been present before the establishment of vertebrates.[well established][VHOG]" @default.
- UBERON_0001899 UBPROP_0000003 "The epithalamus has been historically conceived as a distinct neuroanatomical moiety within the diencephalon of all vertebrates. (...) The evolutionary origins of epithalamic structures are uncertain but asymmetry in this region is likely to have existed at the origin of the vertebrate, perhaps even the chordate, lineage.[well established][VHOG]" @default.
- UBERON_0001905 UBPROP_0000003 "The pineal gland has evolved from a part of the epiphyseal complex of anamniotes, which includes a median light-receptive pineal eye, parietal eye, or both.[well established][VHOG]" @default.
- UBERON_0001911 UBPROP_0000003 "The detailed similarities of mammary glands in living monotremes, marsupials, and eutherians argue for a monophyletic origin of these glands, perhaps by the combination of parts of preexisting sebaceous and sweat glands.[well established][VHOG]" @default.
- UBERON_0001913 UBPROP_0000003 "The detailed similarities of mammary glands in living monotremes, marsupials, and eutherians argue for a monophyletic origin of these glands, perhaps by the combination of parts of preexisting sebaceous and sweat glands.[well established][VHOG]" @default.
- UBERON_0001917 UBPROP_0000003 "Vertebrates and a very few invertebrates such as squids have evolved a secondary epithelium, the endothelium, that lines their blood vessels.[well established][VHOG]" @default.
- UBERON_0001919 UBPROP_0000003 "Vertebrates and a very few invertebrates such as squids have evolved a secondary epithelium, the endothelium, that lines their blood vessels.[well established][VHOG]" @default.
- UBERON_0001943 UBPROP_0000003 "Together, our results reveal a shared basic organization in the tegmental domains of the diencephalon and midbrain of developing lamprey, indicating early appearance of the domain in vertebrate phylogeny.[well established][VHOG]" @default.
- UBERON_0001950 UBPROP_0000003 "The 6-layer neocortex is well conserved in all extant mammals, but not present in birds or reptils" @default.
- UBERON_0001981 UBPROP_0000003 "The appearance of Chordata and subsequently the vertebrates is accompanied by a rapid structural diversification of this primitive linear heart: looping, unidirectional circulation, an enclosed vasculature, and the conduction system.[well established][VHOG]" @default.
- UBERON_0001982 UBPROP_0000003 "The appearance of Chordata and subsequently the vertebrates is accompanied by a rapid structural diversification of this primitive linear heart: looping, unidirectional circulation, an enclosed vasculature, and the conduction system.[well established][VHOG]" @default.
- UBERON_0001987 UBPROP_0000003 "Phylogenetic analyses of the concatenated data set using maximum parsimony, maximum likelihood and distance based (neighbour joining) methods all converged on a nearly identical, well supported topology defining four principal eutherian lineages. The results affirm monophyly of traditional placental orders (except Artiodactyla and Insectivora), and also support some previously proposed, as well as new, superordinal clades.[well established][VHOG]" @default.
- UBERON_0002012 UBPROP_0000003 "On the other hand, in the sister clade of the actinopterygians, the sarcopterygians, the gill circulation is supplemented with lung ventilation. As a result, the pulmonary artery and vein and a functional ductus arteriosus arose as a major evolutionary innovation from the sixth arch, giving the organism a flexible shunt to balance blood supply to and from gills and lungs according to environmental conditions.[well established][VHOG]" @default.
- UBERON_0002016 UBPROP_0000003 "On the other hand, in the sister clade of the actinopterygians, the sarcopterygians, the gill circulation is supplemented with lung ventilation. As a result, the pulmonary artery and vein and a functional ductus arteriosus arose as a major evolutionary innovation from the sixth arch, giving the organism a flexible shunt to balance blood supply to and from gills and lungs according to environmental conditions.[well established][VHOG]" @default.
- UBERON_0002018 UBPROP_0000003 "Phylogenetically, synovium is one of the newer attributes of the vertebrate locomotor apparatus. The first synovial joints developed in the piscine jaw of ancestors of modern lungfish by an evolutionary process that modified preexisting fibrous and cartilaginous joints, which were the predominant articulation of the early sea- and land-dwelling vertebrates.[well established][VHOG]" @default.
- UBERON_0002019 UBPROP_0000003 "Cranial nerves XI and XII evolved in the common ancestor to amniotes (non-amphibian tetrapods) thus totalling twelve pairs.[well established][VHOG]" @default.
- UBERON_0002028 UBPROP_0000003 "Fine structural, computerized three-dimensional (3D) mapping of cell connectivity in the amphioxus nervous system and comparative molecular genetic studies of amphioxus and tunicates have provided recent insights into the phylogenetic origin of the vertebrate nervous system. The results suggest that several of the genetic mechanisms for establishing and patterning the vertebrate nervous system already operated in the ancestral chordate and that the nerve cord of the proximate invertebrate ancestor of the vertebrates included a diencephalon, midbrain, hindbrain, and spinal cord.[well established][VHOG]" @default.
- UBERON_0002037 UBPROP_0000003 "However, although the lamprey possesses a region comparable to the cerebellum and display expression of LjFgf8/17 at the MHB (midbrain hindbrain boundary), it does not have Purkinje cells and cerebellar nuclei, as well as components of the rhombic lip-derived cerebellar and pre-cerebellar systems. It is noteworthy that the latter structures require specific expression of Pax6 in the rhombic lip of the gnathostome hindbrain. Interestingly, the lamprey rhombic lip does not express Pax6. Thus, it is tempting to speculate that in vertebrate evolution the rostral hindbrain is incapable of differentiating into the cerebellum before the co-option of Pax6 in that region. In other words, cerebellum has been brought about as an evolutionary innovation in gnathostomes, based on exaptation of MHB, rhombic lip, and some regulatory gene expression already present in the vertebrate common ancestor.[well established][VHOG]" @default.
- UBERON_0002038 UBPROP_0000003 "(...) the substantia nigra first appears in reptiles and is best developed in primates.[well established][VHOG]" @default.
- UBERON_0002046 UBPROP_0000003 "(...) at some stage of its development, every chordate exhibits five uniquely derived characters or synapomorphies of the group: (...) (2) a groove in the pharyngeal floor known as the endostyle, or a thyroid gland derived from part of the endostyle (...).[well established][VHOG]" @default.
- UBERON_0002048 UBPROP_0000003 "Lungs had already developed as paired ventral pockets from the intestine in the ancestor of Osteognathostomata. (...) In actinopterygian fishes, apart from Cladistia, the ventral intestinal pocket migrates dorsally and becomes the swim-bladder, a mainly hydrostatical organ (reference 1); Comparative transcriptome analyses indicate molecular homology of zebrafish swimbladder and Mammalian lung (reference 2).[well established][VHOG]" @default.
- UBERON_0002058 UBPROP_0000003 "Little is known about the development of parasympathetic neurons apart from the ciliary ganglion in chicks. Although there are considerable gaps in our knowledge, some of the mechanisms controlling sympathetic and enteric neuron development appear to be conserved between mammals, avians and zebrafish.[uncertain][VHOG]" @default.
- UBERON_0002062 UBPROP_0000003 "(Cardiac valve formation in vertebrates) In response to a myocardial signal, endocardial cells at chamber boundaries take on a mesenchymal character, delaminate and migrate into the cardiac jelly. There, they form an endocardial cushion that is later remodelled into a valve.[well established][VHOG]" @default.
- UBERON_0002063 UBPROP_0000003 "In the primitive vertebrate heart the four chambers are: 1. Sinus venosus (...) 2. Atrium (...) 3. Ventricle (...) 4. Conus arteriosus (...).[well established][VHOG]" @default.
- UBERON_0002064 UBPROP_0000003 "In primitive vertebrates, the basic early embryonic pattern is retained, and blood from anterior and posterior systemic tissues is returned in anterior and posterior cardinal veins, both pairs of veins uniting in common cardinal veins near the heart. In derived vertebrates, the cardinals appear but usually persist only in the embryo, being functionally replaced by alternative adult vessels, the precava and postcava (anterior and posterior venae cavae).[well established][VHOG]" @default.
- UBERON_0002065 UBPROP_0000003 "In primitive vertebrates, the basic early embryonic pattern is retained, and blood from anterior and posterior systemic tissues is returned in anterior and posterior cardinal veins, both pairs of veins uniting in common cardinal veins near the heart. In derived vertebrates, the cardinals appear but usually persist only in the embryo, being functionally replaced by alternative adult vessels, the precava and postcava (anterior and posterior venae cavae).[well established][VHOG]" @default.
- UBERON_0002067 UBPROP_0000003 "When approaching controversies surrounding skin evolution, we need to remember that the skin consists of two layers, an epidermis and a dermis, not a single evolving structure. (...) It is little wonder that controversies about homology exist. If we think of the epidermis, the dermis, and their interactions as an evolving unit, then their specialized products (hair, feathers, and reptilian scales) are broadly homologous.[well established][VHOG]" @default.
- UBERON_0002073 UBPROP_0000003 "The earliest reliable record of hair is found in a fossil of the Paleocene period, in which the structure of hair cuticles is preserved. Its appearance suggests that the complicated structure of the hair follicle, closely similar to that of present-day mammals, had already appeared at this time.[well established][VHOG]" @default.
- UBERON_0002078 UBPROP_0000003 "The tetrapod clade develops a complete atrial septum and loses the fifth aortic arch altogether.[well established][VHOG]" @default.
- UBERON_0002079 UBPROP_0000003 "The tetrapod clade develops a complete atrial septum and loses the fifth aortic arch altogether.[well established][VHOG]" @default.
- UBERON_0002081 UBPROP_0000003 "In the primitive vertebrate heart the four chambers are: 1. Sinus venosus (...) 2. Atrium (...) 3. Ventricle (...) 4. Conus arteriosus (...).[well established][VHOG]" @default.
- UBERON_0002082 UBPROP_0000003 "In the primitive vertebrate heart the four chambers are: 1. Sinus venosus (...) 2. Atrium (...) 3. Ventricle (...) 4. Conus arteriosus (...)[well established][VHOG]" @default.
- UBERON_0002084 UBPROP_0000003 "The vertebrate heart initially forms as a tube from a population of precursor cells termed the first heart field (FHF). Cells from the adjacent second heart field (SHF) are then progressively added to the developing heart. In avian and mammalian hearts, the FHF contributes mainly to the left ventricle, whereas the SHF gives rise to the outflow tract and large portions of the right ventricle and atria. Both fields arise from common mesodermal progenitors, although the detailed lineage relationships between FHF and SHF remain uncertain.[well established][VHOG]" @default.
- UBERON_0002085 UBPROP_0000003 "The tetrapod clade develops a complete atrial septum and loses the fifth aortic arch altogether.[well established][VHOG]" @default.
- UBERON_0002087 UBPROP_0000003 "The heart is the first organ to form and function in a vertebrate. (...) Septation of the AV canal is initiated with the formation of inferior and superior endocardial cushions in response to signaling from the overlying myocardium. (...) Analysis of zebrafish mutants with cardiovascular defects uncovered a previously unexpected level of conservation between zebrafish and human cardiovascular physiology.[uncertain][VHOG]" @default.
- UBERON_0002090 UBPROP_0000003 "The axial musculoskeletal system represents the plesiomorphic locomotor engine of the vertebrate body, playing a central role in locomotion. In craniates, the evolution of the postcranial skeleton is characterized by two major transformations. First, the axial skeleton became increasingly functionally and morphologically regionalized. Second, the axial-based locomotion plesiomorphic for craniates became progressively appendage-based with the evolution of extremities in tetrapods.[well established][VHOG]" @default.
- UBERON_0002092 UBPROP_0000003 "In fishes, the meninges consist of a single membrane, the primitive meninx, wrapped around the brain and spinal cord. With the adoption of terrestrial life, the meninges doubled. In amphibians, reptiles, and birds, the meninges include a thick outer dura mater derived from mesoderm and a thin inner secondary meninx. (...) In mammals, the dura mater persists, but division of the secondary meninx yields both the arachnoid and the pia mater from ectomesoderm.[well established][VHOG]" @default.
- UBERON_0002093 UBPROP_0000003 "In fishes, the meninges consist of a single membrane, the primitive meninx, wrapped around the brain and spinal cord. With the adoption of terrestrial life, the meninges doubled. In amphibians, reptiles, and birds, the meninges include a thick outer dura mater derived from mesoderm and a thin inner secondary meninx. (...) In mammals, the dura mater persists, but division of the secondary meninx yields both the arachnoid and the pia mater from ectomesoderm.[well established][VHOG]" @default.
- UBERON_0002094 UBPROP_0000003 "The two most progressive vertebrate classes, the birds and mammals, have completed the ventricular septum and at long last have completely separated the two blood streams along the length of the major heart chambers. This development has obviously been brought about independently in the two cases, since mammals and birds have evolved independently from primitive reptiles.[well established][VHOG]" @default.
- UBERON_0002101 UBPROP_0000003 "Most anatomists now agree that the three proximal bones of the tetrapod limbs are homologous to the two or three proximal elements of the paired fin skeleton of other sarcopterygians, that is the humerus-femur, radius-tibia, and ulna-fibula.[well established][VHOG]" @default.
- UBERON_0002103 UBPROP_0000003 "Most anatomists now agree that the three proximal bones of the tetrapod limbs are homologous to the two or three proximal elements of the paired fin skeleton of other sarcopterygians, that is the humerus-femur, radius-tibia, and ulna-fibula.[well established][VHOG]" @default.
- UBERON_0002106 UBPROP_0000003 "With the advent of clonal selection, the accumulation and segregation of T and B cells in specialized organs for antigen presentation became necessary, and indeed the spleen is found in all jawed vertebrates, but not in agnathans or invertebrates.[well established][VHOG]" @default.
- UBERON_0002107 UBPROP_0000003 "All vertebrates possess a liver (reference 1); Later in craniate evolution, an anterior gill arch was transformed into jaws, and many new types of feeding subsequently evolved.(...) A liver evolved that, among its many functions, stores considerable energy as glycogen or lipid (reference 2).[well established][VHOG]" @default.
- UBERON_0002108 UBPROP_0000003 "Intestinal surface area also is increased in amphibians and reptiles by internal folds and occasionally by a few villi. The intestine can be divided into a small intestine and a slightly wider large intestine.[well established][VHOG]" @default.
- UBERON_0002110 UBPROP_0000003 "The presence of a gallbladder appears to be a primitive trait. It is found in most fish and all adult reptiles and amphibians and has been well conserved in mammals, for the most part.[well established][VHOG]" @default.
- UBERON_0002116 UBPROP_0000003 "Although all vertebrates have a digestive tract and accessory glands, various parts of this system are not necessarily homologous, analogous, or even present in all species. Therefore, broad comparisons can be best made under the listings of headgut, foregut, midgut, pancreas and biliary system, hindgut.[uncertain][VHOG]" @default.
- UBERON_0002120 UBPROP_0000003 "In all vertebrate embryos, the kidney begins with the differentiation of a few renal tubules from the anterior end of the nephric ridge overlying the pericardial cavity. (...) This early-developing embryonic kidney is called the pronephros.[well established][VHOG]" @default.
- UBERON_0002127 UBPROP_0000003 "The inferior olive appears to be present in all vertebrate classes and is particularly well developed in species with a well-developed cerebellum.[well established][VHOG]" @default.
- UBERON_0002132 UBPROP_0000003 "One or more deep cerebellar nuclei appear in agnathans, sharks, ropefishes, lungfishes, Latimeria, and amphibians. Reptiles have two nuclei (a medial and a lateral), and birds and mammals have three nuclei (a medial, a lateral, and an interposed nucleus). The medial nucleus of mammals is known as the fastigial nucleus, and the lateral nucleus is known as the dentate nucleus.[well established][VHOG]" @default.
- UBERON_0002133 UBPROP_0000003 "The conus arteriosus is the most distal part of the primitive fish heart and forms the connection between the ventricle and the ventral aorta. At the sinoatrial, the atrioventricular, and the ventriculoconal junctions, valves developed to prevent backflow of blood during relaxation of the preceding compartment.[uncertain][VHOG]" @default.
- UBERON_0002134 UBPROP_0000003 "The mature AV (atrioventricular) valve of the adult zebrafish 2-chambered heart is structurally similar to the mammalian AV valves with stratified ECM (extracellular matrix) and supporting chordae tendineae. Therefore, the major cellular and molecular events of valve development are largely conserved among animals with hearts composed of multiple chambers.[well established][VHOG]" @default.
- UBERON_0002135 UBPROP_0000003 "The mature AV (atrioventricular) valve of the adult zebrafish 2-chambered heart is structurally similar to the mammalian AV valves with stratified ECM (extracellular matrix) and supporting chordae tendineae. Therefore, the major cellular and molecular events of valve development are largely conserved among animals with hearts composed of multiple chambers.[well established][VHOG]" @default.
- UBERON_0002140 UBPROP_0000003 "Nucleus isthmi is present in the isthmus in most vertebrates. It is called the parabigeminal nucleus in mammals (reference 1); In sum, our results show that the origin of neurons of some tegmental hindbrain nuclei, namely, nucleus isthmi/superior reticular nucleus and secondary gustatory/viscerosensory nucleus is in the URL (upper rhombic lip), and that the temporal order of cell types produced by the URL and their developmental program are conserved among vertebrate species (reference 2).[well established][VHOG]" @default.
- UBERON_0002153 UBPROP_0000003 "One or more deep cerebellar nuclei appear in agnathans, sharks, ropefishes, lungfishes, Latimeria, and amphibians. Reptiles have two nuclei (a medial and a lateral), and birds and mammals have three nuclei (a medial, a lateral, and an interposed nucleus). The medial nucleus of mammals is known as the fastigial nucleus, and the lateral nucleus is known as the dentate nucleus.[well established][VHOG]" @default.
- UBERON_0002167 UBPROP_0000003 "Lungs had already developed as paired ventral pockets from the intestine in the ancestor of Osteognathostomata.[well established][VHOG]" @default.
- UBERON_0002168 UBPROP_0000003 "Lungs had already developed as paired ventral pockets from the intestine in the ancestor of Osteognathostomata.[well established][VHOG]" @default.
- UBERON_0002196 UBPROP_0000003 "It (the hypophysis) develops embryonically in all vertebrates from two ectodermal evaginations that meet and unite. An infundibulum grows ventrally from the diencephalon of the brain, and Rathke's pouch extends dorsally from the roof of the developing mouth, or stomodaeum. The infundibulum remains connected to the floor of the diencephalon, which becomes the hypothalamus, and gives rise to the part of the gland known as the neurohypophysis. (...) Rathke's pouch loses its connection with the stomodaeum in most adult vertebrates and gives rise to the rest of the gland, the adenohypophysis. (...) A well-developed hypophyseal system with functional connections to the hypothalamus is unique to craniates.[well established][VHOG]" @default.