9. Where are the following located? Briefly mention the function of each:

(a) Oval window

(b) Cochlea

(c) Semicircular canals

(d) Utriculus

Solution:-

(a) Oval window is a membrane-covered opening leading to the inner ear. It is located in the middle ear.

(b) The spiral-shaped cochlea resembles a snail shell. It can be found in the inner ear. It aids in the transmission of impulses from the auditory nerve to the brain.

(c) In the inner ear, there is a semicircular canal. It is enlarged to form an ampulla, which houses sensory cells that help in dynamic balance.

(d) It can be found in the inner ear. The slender stem that connects the semicircular canals’ bases to the cochlea. When the body is motionless, such as when standing, these areas also include sensory cells for static equilibrium.