Q. Read the following statements (a-d) regarding the vestibular apparatus.
a. It is a part of the internal ear.
b. It is composed of three semicircular canals and the otolith organ consisting of utriculus & cochlea.
c. Crista and macula are the specific receptors of the vestibular apparatus.
d. It is responsible for the maintenance of a balance of the body.
Which of the above statements is/are wrong?

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Solution:

Vestibular apparatus, located above the cochlea is the complex system of the inner ear. It is composed of the membranous labyrinth of the inner ear consists of three semicircular ducts three semi-circular canals and the otolith organ consisting of the saccule and utricle. The saccule and utricle contain a projecting ridge called macula. This crista and macula are responsible for the maintenance of a balance of the body.