Definitions for hair cells, ampulla
U.S. National Library of Medicine
Hair Cells, Ampulla
Sensory cells in the ampullary crest of each of the semicircular ducts, with their apical stereocilia embedded in a wedge-shaped gelatinous cupula. These hair cells sense the movement of ENDOLYMPH resulting from angular acceleration of the head, and send signals via the VESTIBULAR NERVE to the brain to maintain balance.
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