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(N) Parts of the Ear II

(N) Parts of the Ear II

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n. bony labyrinth

Definition of bony labyrinth in English

Osseous cavity located in the inner ear of vertebrates that is comprised of the cochlea and the vestibular system, which aids in the functions of spatial orientation, balance and auditory perception.

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n. cochlea

Definition of cochlea in English

Spiralled, fluid-filled chamber of the bony labyrinth in the inner ear, which converts sound waves received from the middle ear into nerve impulses along the auditory nerve.

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n. semicircular canal

Definition of semicircular canal in English

One of three small, fluid-filled tubes of the bony labyrinth, which aids in the sense of balance.

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n. vestibular system

Definition of vestibular system in English

Set of structures, located in the bony labyrinth of the inner ear, that contributes to the functions of balance and spatial orientation, comprised of the vestibule and the three semicircular canals.

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n. vestibule

Definition of vestibule in English

Central chamber of the bony labyrinth that houses the saccule and utricle, which contributes to the senses of balance and spatial orientation.

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n. Eustachian tube

Definition of Eustachian tube in English

Tube located between the middle ear and the nasopharynx, which equalizes air pressure on both sides of the eardrum and drains mucus from the middle ear.

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n. utricle

Definition of utricle in English

Globular bed of cells, located in the vestibule of the inner ear, which detects horizontal head movements, aiding in balance.

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n. saccule

Definition of saccule in English

Globular bed of cells, located in the vestibule of the inner ear, which detects vertical head movements, aiding in balance.