ampullar crest

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.