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posterior semicircular duct
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UBERON_0001858 |
[The semicircular canals are three half-circular, interconnected tubes located inside each ear. The three canals are the horizontal semicircular canal (also known as the lateral semicircular canal), superior semicircular canal (also known as the anterior semicircular canal), and the posterior semicircular canal. The canals are aligned approximately orthogonally to one another. The horizontal canal is aligned roughly horizontally in the head. The superior and anterior canals are aligned roughly at a 45 degree angle to a vertical plane drawn from the nose to the back of the skull. Thus, the horizontal canal detects horizontal head movements (such as when doing a pirouette), while the superior and posterior canals detect vertical head movements. Each canal is filled with a fluid called endolymph and contains a motion sensor with little hairs whose ends are embedded in a gelatinous structure called the cupula. As the skull twists in any direction, the endolymph is thrown into different sections of the canals. The cilia detect when the endolymph rushes past, and a signal is then sent to the brain. The semicircular canals are a component of the Labyrinth. Among species of mammals, the size of the semicircular canals is correlated with their type of locomotion. Specifically, species that are agile and have fast, jerky locomotion have larger canals relative to their body size than those that move more cautiously.] |
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semicircular duct
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UBERON_0001856 |
[Any of the three loop-shaped membranous inner tubular parts of the semicircular canals that are about one-fourth the diameter of the corresponding outer bony canals, that communicate at each end with the utricle, and that have near one end an expanded ampulla containing an area of sensory epithelium.] |
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lateral semicircular duct
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UBERON_0001859 |
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anterior parieto-occipital sulcus
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UBERON_0025829 |
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saccule of membranous labyrinth
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UBERON_0001854 |
[The smaller of the two otolith organs in the vestibule.] |
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cochlear duct of membranous labyrinth
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UBERON_0001855 |
[An endolymph filled cavity inside the cochlea, located in between the scala tympani and the scala vestibuli, separated by the basilar membrane and Reissner's membrane (the vestibular membrane) respectively. Houses the organ of Corti[WP].] |
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obsolete regional part of pontine reticular formation
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UBERON_0025827 |
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obsolete regional part of superior olivary complex
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UBERON_0025828 |
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anterior semicircular duct
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UBERON_0001857 |
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obsolete larval pectoral fin
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UBERON_4300160 |
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caudate nucleus
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UBERON_0001873 |
[Subcortical nucleus of telecephalic origin consisting of an elongated gray mass lying lateral to and bordering the lateral ventricle. It is divided into a head, body and tail in some species.] |
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putamen
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UBERON_0001874 |
[Subcortical nucleus of telencephalic , which together with the caudate nucleus, forms the striatum. The putamen lies lateral to the internal capsule and medial to the external medullary lamina, and is separated from the caudate nucleus by the fibers of the internal capsule for most of its length, except at its anterior portion.] |
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globus pallidus
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UBERON_0001875 |
[Subcortical nucleus, functionally part of the basal ganglia, which consists of two segments the external (or lateral) and internal (or medial) separated by the medial medullary lamina in primates. In rodents, The globus pallidus lateral is separated from the medial segment by the fibers of the internal capsule/cerebral peduncle.] |
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parietal branch of the supraorbital canal
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UBERON_4300176 |
[Branch of supraorbital sensory canal that extends to the parietal.] |
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procumbent dorsal fin spine
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UBERON_4300175 |
[Fin spine that precedes the dorsal fin, oriented anteriorly towards the head of the fish.] |
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actinopterygian pyloric caecum
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UBERON_4300174 |
[A finger-like out-pocketing of the intestine where it meets the end of the stomach (pylorus). Also spelled cecum (ceca). Serves to aid digestion.] |
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pelvic fin bud
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UBERON_4300173 |
[A paired fin bud that develops into a pelvic fin.] |
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cartilaginous external acoustic tube
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UBERON_0001865 |
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UBERON_0025819
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UBERON_0025819 |
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inner tooth row of premaxilla
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UBERON_4300179 |
[Tooth row on the premaxilla that is lingually located relative to other tooth rows.] |