How do we hear the sound?

Hearing depends on hearing, which is completed by the simultaneous activities of ears, auditory nerves and auditory pathways. Ear is the peripheral sensory organ of hearing, which consists of outer ear, middle ear and inner ear cochlea; The outer ear and middle ear are sound transmission systems, while the inner ear is sound perception system.

The sound emitted by an object propagates through the air and passes through the conduction system of the outer ear, middle ear and inner ear, causing the vibration of lymph and basement membrane fibers in the cochlea, thus causing the excitement of auditory cells and generating nerve impulses.

The impulse travels along the auditory nerve to the medial geniculate body of thalamus, and after exchanging neurons, it enters the auditory area of cerebral cortex (superior temporal gyrus) to produce hearing.

Extended data:

The human ear is located in the temporal region on both sides of the head, and its main function depends on two important organs:

One is the auditory organ that receives external sounds-cochlea and the auditory nerve connected with it (also known as cochlear nerve).

The other is vestibule and semicircular canal, which help the body maintain balance, and vestibular nerve is connected with them. Transmit sensory information to the auditory nerve center and vestibular nerve center of the brain.

This series of equipment. Therefore, the nerve that completes the function of the ear is also referred to as the positional (sensory) auditory (sensory) nervous system for short.

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