Question

The sense of equilibrium by ear is the function of

• A. Sensory crista of the ampulla
• B. Sensory cells of the organ of corti
• C. Membrane of cochlea
• D. Outer membrane of cochlea

Answer 1

The correct option is A

Sensory crista of the ampulla

The inner ear also contains a complex system called vestibular apparatus, located above the cochlea. The vestibular apparatus is composed of three semi-circular canals. 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.