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The functions of three main component of ear are given below:-
1.Outer ear
The outer ear is the most external portion of the ear. The outer ear includes pinna (auricle), the ear canal and the ear drum ( tympanic membrane).
The outer ear serves as a protective organ for the eardrum, and it guides sound waves into the middle ear. It consists of the Ear Flap, which guides sound, and the Ear Canal, which secretes earwax.
2. Middle ear
It is the portion of the ear internal to eardrum and external to oval window of cochlea. It contains 3 ossicles, which couple vibration of the eardrum into waves in the fluid and membranes of inner ear.
The primary function of the middle ear is to efficiently transfer acoustic energy from compression waves in air to fluid-membrane waves within cochlea.
3. Inner ear
It includes both the organ of hearing and a sense organ that is attuned to the effects of both gravity and motion (labyrinth or vestibular apparatus). The balance portion of the inner ear consists of 3 semicircular canals and vestibules.
When sound enters the inner ear, it causes vibrations. Small hairs react to the vibrations, causing nerve impulses to be sent to the brain, which are interpreted by the brain as sound.
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