| crista ampullaris | An elevation on the inner surface of the ampulla of each saemicircular duct; filaments of the vestibular nerve pass through the crista to reach hair cells on its surface; the hair cells are capped by the cupula, a gelatinous protein-polysaccharide mass. Synonym: crista ampullaris, acoustic crest, transverse septum. (05 Mar 2000) |
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| cupula cristae ampullaris | A gelatinous mass that overlies the hair cells of the ampullary crests of the saemicircular ducts; movement of endolymphatic fluid causes the cupula to move across the hair cells of the ampullary crest. Synonym: cap of the ampullary crest. (05 Mar 2000) |
| nervus ampullaris anterior | <anatomy, nerve> A branch of the utriculoampullar nerve that supplies the crista ampullaris of the anterior saemicircular duct. Synonym: nervus ampullaris anterior. (05 Mar 2000) |
| nervus ampullaris lateralis | <anatomy, nerve> A branch of the utriculoampullar nerve that supplies the crista ampullaris of the lateral saemicircular duct. Synonym: nervus ampullaris lateralis. (05 Mar 2000) |
| nervus ampullaris posterior | <anatomy, nerve> A branch of the vestibular part of the eighth nerve that supplies the crista ampullaris of the posterior saemicircular duct. Synonym: nervus ampullaris posterior. (05 Mar 2000) |
| neuroepithelium cristae ampullaris | neuroepithelium of ampullary crest |
| sulcus ampullaris | The groove on the external surface of the ampulla of each saemicircular duct where the nerve enters the crista ampullaris. Synonym: sulcus ampullaris. (05 Mar 2000) |
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