The hair cells in the semicircular canals are stimulated by

A. False Perilymph is the fluid outside the membranous labyrinth.

B. False Their adequate stimulus is angular not linear acceleration or deceleration.

C. False A blindfold person is unaware of any sensation when rotated at constant velo-city, e.g. as on the earth!

D. False Gravity produces linear acceleration.

E. True During angular acceleration or deceleration, the inertia of the endolymph causes it to move relative to the hair cells on the walls of the semicircular canals. The resulting movement of the hair cells generates afferent impulses that travel in the vestibular nerves.