cupula ampullaris

(redirected from ampullary cupula)

cu·pu·la am·pul·la·'ris

[TA]
a gelatinous mass that overlies the hair cells of the ampullary crests of the semicircular ducts; movement of endolymphatic fluid causes the cupula to move across the hair cells of the ampullary crest.
Synonym(s): ampullary cupula