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special senses ear
| Question | Answer |
|---|---|
| outer ear aka | external ear |
| middle ear aka | tympanic cavity |
| inner ear aka | labyrinth |
| external ear conducts sound waves through: | air |
| middle ear conducts sound waves throug: | bone |
| inner ear conducts sound waves through: | fluid |
| pinna (cartilage) aka | auricle |
| waxy secretion | cerumen |
| tympanic membrane | eardrum |
| slender tube lined with glands that produce cerumen | ear canal |
| flat, membranous structure drawn over the end of the ear canal | tympanic membrane / ear drum |
| sound waves enter the ear canal and and strike against: | tympanic membrane (ear drum) |
| vibrations of tympanic membrane cause movement of the: | ossicles |
| ossicles are: | malleus, incus, & stapes |
| ossicles are located: | within tympanic cavity |
| ossicles form a coupling between tympanic membrane and: | cochlea |
| the first structure of the inner ear (snail shaped): | cochlea |
| cochlea is filled with fluid called: | perilymph |
| inner surfaces of cochlea are lined with highly sensitive hearing structure called: | organ of Corti |
| membrane-covered opening on the external surface of the cochlea is called the: | oval window |
| oval window provides a place for the attachment of: | stapes |
| the movement of the ossicles in the middle ear causes the stapes to exert a gentle pumping action against the: | oval window |
| pumping action of stapes causes perilymph to disturb: | hair cells |
| organ of Corti contains tiny nerve endings called: | hair cells |
| disturbed hair cells generate impulses that are transmitted to the brain by way of the: | auditory nerve |
| auditory nerve transmitts impulses to ________ where they are interpreted as _________: | brain, sound |
| connects middle ear to the pharynx | eustachian tube |
| eaustachian tube does what? | equalizes pressure on the outer and inner surfaces of the eardrum. |
| deliberate swallowing does what? | equalizes pressure on either side of the typmanic membrane by way of eustachian tube. |
| the labyrinth (inner ear)includes the: | cochlea and vestibular system |
| vestibular system does what? | devoted to the control of balance and eye movements |
| vestibular system contains: | semicircular canals and the vestibule |
| the vestibule joins the: | cochlea and the semicircular canals |
| static equilibrium refers to: | the orientation of the body relative to gravity. |
| dynamic equilibrium refers to: | maintaining body position in response to movement |
Created by:
MedixMOA
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