membranous ampullae of the semicircular ducts
a nearly spheric enlargement of one end of each of the three semicircular ducts, anterior, posterior, and lateral, where they connect with the utricle. Each contains a neuroepithelial ampullary crest (crista ampullaris).
Synonym(s): ampulla membranaceaTA, membranous ampulla
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.