Page 259 - Anatomy and Physiology of Farm Animals, 8th Edition

244 / Anatomy and Physiology of Farm Animals

(A)
VetBooks.ir

(B) (C)

Hair cells

Crista
ampullaris

Afferents of
vestibular
nerve
Cupula

Figure 12-10. Crista ampullaris. (A) Photomicrograph of crista ampullaris within the ampulla.
(B) Schematic of crista anatomy. A gelatinous cupula, in which the hair cells are embedded, forms a
flexible barrier across the ampulla. (C) Rotation of the head produces inertial movements of endolymph
(arrow) that deflects gelatinous cupula and bends the cilia of the hair cells. Source: photomicrograph
courtesy of Gretchen Delcambre, Colorado State University, Fort Collins, Colorado, USA.