ampullary crest


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crest

 [krest]
a projection, or projecting structure or ridge, especially one surmounting a bone or its border.
alveolar crest alveolar ridge.
ampullar crest (ampullary crest) the most prominent part of a localized thickening of the membrane that lines the ampullae of the semicircular ducts, covered with neuroepithelium containing endings of the vestibular nerve.
dental crest the maxillary ridge passing along the alveolar processes of the fetal maxillary bones.
iliac crest the thickened, expanded upper border of the ilium.

am·pul·la·ry crest

[TA]
an elevation on the inner surface of the ampulla of each semicircular 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.
See also: neuroepithelium of ampullary crest.

am·pul·la·ry crest

(am'pul-ar-ē krest) [TA]
An elevation on the inner surface of the ampulla of each semicircular 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.