Question

____________ and ___________ are the specific receptors of the vestibular apparatus responsible for maintenance of balance of the body and posture.

• A. Saccule and utricle
• B. Saccule and macula.
• C. Crista and utricle
• D. Crista and macula.

Answer 1

The correct option is D Crista and macula.

The vestibular apparatus is located above the cochlea. The vestibular apparatus is composed of three semi-circular canals and the otolith organ consisting of the saccule and utricle.

The base of canals is swollen and is called ampulla, which contains a projecting ridge called crista ampullaris which has hair cells. The saccule and utricle contain a projecting ridge called macula. The crista and macula are the specific receptors of the vestibular apparatus responsible for maintenance of balance of the body and posture.