A ridge-shaped collection of hair cells in the ampulla of a semicircular canal; the crista and cupula form a receptor complex sensitive to movement along the plane of the canal.

Sensory organs of dynamic equilibrium, which are located within the ampullae of the inner ear. Crown The part of a tooth that is exposed, and covered with enamel.

Structures formed by the folding of the inner membrane of a mitochondrion (sing.: crista). PICTURE

DIAGRAMS: Mitochondria PHOTOS