The cochlea is
1. a fluid-filled tube in which sound waves trigger nerve impulses.
2. set of three tiny bones that amplify the vibrations of the eardrum.
3. fluid-filled tube that provides a sense of upright body position.
4. specific area of the auditory cortex.

The cochlea is one of the three areas of the inner ear. Its structure resembles the shell of snails. The cochlea is present anterior to the vestibule and is bony. It has several hair cells present in the organ of Corti. Hair cells serve as auditory receptors. As the sound waves enter the organ of Corti, the hair cells sense them and send the nerve impulse to the brain via the cochlear nerve. The brain interprets the pitch of the sound.

The cochlea is 1. a fluid-filled tube in which sound waves trigger nerve impulses. 2. set of three tiny bones that amplify the vibrations of the eardrum. 3. fluid-filled tube that provides a sense of upright body position. 4. specific area of the auditory cortex.

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The cochlea is
1. a fluid-filled tube in which sound waves trigger nerve impulses.
2. set of three tiny bones that amplify the vibrations of the eardrum.
3. fluid-filled tube that provides a sense of upright body position.
4. specific area of the auditory cortex.