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22 Cards in this Set
- Front
- Back
The ear is a _____ organ.
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sensory
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Name two things that the ear is responsible for.
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1)hearing
2)helps maintain balance |
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How many tones can the ear discriminate?
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more than 300,000 tones
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The ear is composed of what 3 regions?
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1)external ear
2)middle ear 3)inner ear |
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Name the parts (4) of the external ear (one of the 3 regions of the ear).
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1)pinna/auricle
2)external auditory meatus 3)eardrum/tympanic membrane 4)cerumen |
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pinna/auricle
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(part of the external ear) -- visible outside flap of the ear -- external to the head; It functions to capture sound waves as they go past the outer ear.
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external auditory meatus
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(part of the external ear) -- sound travels down the meatus leading to the eardrum
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eardrum/tympanic membrane
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(part of the external ear) -- membrane acts as barrier between external and middle ear -- sound waves vibrate off eardrum then travel to middle ear
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tympanic
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Means "pertaining to the ear drum."
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cerumen
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(part of the external ear) -- ear wax - provides protection for the ear
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Name the parts of the middle ear(one of the 3 regions of the ear) (3).
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1)ossicles
2)oval Window 3)eustachian tube |
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ossicles
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(part of the middle ear) -- 3 tiny bones conduct sound through the middle ear, the malleus (hammer), incus (anvil) and stapes (stirrup)
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malleus
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One of the three ossicles of the middle ear. Also called the hammer.
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incus
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One of the three ossicles of the middle ear. Also called the anvil.
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stapes
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One of the three ossicles of the middle ear. It is attached to the oval window leading to the inner ear. Also called the stirrup.
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oval window
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(part of the middle ear) -- separates the middle ear from the inner ear
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eustachian tube
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(part of the middle ear) -- tube leading from the middle ear to pharynx,equalizing pressure.
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An infection that travels from the pharynx via the eustachian tube is called what?
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a middle ear infection, common in children
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Name the parts of the inner ear (one of the 3 regions of the ear) (2).
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1)labyrinth
2)organ of corti |
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labyrinth
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(part of the inner ear) -- maze-like series of canals in the inner ear, consists of the vestibule and cochlea
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vestibular apparatus
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Part of the inner ear responsible for equilibrium. Conditions resulting in loss of balance may arise from this area.
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cochlea
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A portion of the labyrinth associated with hearing. It is rolled in the shape of a snail shell. The organs of Corti line the cochlea.
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