Question

Sensory crista of ampulla of mammalian ear is connected with

• A. Sense of balance
• B. Sense of low hearing
• C. Sense of loud hearing
• D. Secretion of ear wax

Answer 1

The correct option is A Sense of balance

The enlargement of one end of semi-circular canal is called ampulla. It is the swollen base of semi-circular canals which are a series of interconnected tubes or channels present in inner ear and form a part of bony labyrinth. They contain a fluid called endolymph. Ampulla contains a projecting ridge called crista ampullaris or crista. It contains sensory hair cells having cytoplasmic projections on the apical end called stereocilia. Crista contains receptors that sense movements in body and maintain dynamic equilibrium. Hence, it maintains balance of the body.

So, the correct answer is 'Sense of balance'.