What are the functions of the following:
Oval window
Round window
Auditory nerve

Dear Student

Oval window:
The human ear consists of three regions called the outer ear, middle ear, and inner ear. The oval window, also known as the fenestra ovalis, is a connective tissue membrane located at the end of the middle ear and the beginning of the inner ear.The fenestra ovalis connects the tiny bones of the middle ear to the scala vestibuli, which is the upper part of the cochlea. 

Round window:
The round window is one of the two openings from the middle ear into the inner ear. It is sealed by the secondary tympanic membrane (round window membrane), which vibrates with opposite phase to vibrations entering the inner ear through the oval window. It allows fluid in the cochela to move.

The cochlea (auditory inner ear) transforms the sound in neural message. The function of the cochlea is to transform the vibrations of the cochlear liquids and associated structures into a neural signal.

The semicircular canals are filled with a fluid called endolymph. When we move our bodies, the fluid inside the semicircular canals moves as well. Each of the canals has an ampulla (enlargement of the canal) which connects to the utricle. The fluid's movement is detected by hair-like projections called cilia, which starts an electrical signal that is sent to the auditory nerve, where it is processed by the brain.

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