part of part of capable of part of capable of part of proprioception apex of cochlea BIRNLEX:2523 cochlea apex The cupula is a structure in the vestibular system, sensing proprioception. The cupula is located within the ampullae of each of the three semicircular canals. As fluid rushes by the cupula, hair cells within it sense rotational acceleration, and transmit the corresponding signal to the brain through the vestibulocochlear nerve (CN VIII) In their natural orientation within the head, the cupulae are located on the medial aspect of the semicircular canals. In this orientation, the kinocilia rest on the posterior aspect of the cupula. [WP,unvetted]. FMA:75641 apex of cochlear canal cupula of cochlea BIRNLEX:2557 BIRNLEX:2555 apex of the cochlear canal UMLS:C0458765 UMLS:C0458764 Wikipedia:Apex_of_cochlea SCTID:279776002 cupula of the cochlear canal SCTID:279777006 UMLS:C1184827 UBERON:0002819 zone of bone organ cochlear canal