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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 |