Term
| innervation ot he auricle is by... |
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Definition
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Term
| innervation around and inside the meatus is by... |
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Definition
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Term
| lower portion of ear is innervated by... |
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Definition
| cervical nn from the cervical plexus |
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Term
the wall of the lateral 1/3 of the external acoustic meatus is...
the wall of the medial 2/3 is... |
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Definition
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Term
the external meatus is .... and must be pulled .... to view the tympanic membrane.
(... in infants) |
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Definition
sinuous, posterosuperiorly
inferoposteriorly |
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Term
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Definition
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Term
| part of the ear that translates sound waves into motion |
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Definition
| middle ear (tympanic) cavity |
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Term
| where is the middle ear housed? |
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Definition
| petrous portion of the temporal bone |
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Term
| expanded region in the later aspect of the roof of the middle ear, in the area of the tympanic membrae |
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Definition
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Term
| what does the epitympanic membrane house? |
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Definition
| part of the malleus and incus |
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Term
| there is a strong relationship between the floor of the tympanic cavity and what structure? |
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Definition
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Term
| the medial wall of the tympanic cavity if formed by the .... and houses part of ... |
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Definition
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Term
| the center of the medial wall of the inner ear contains a swelling called a ... which lies over the ... |
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Definition
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Term
| what lies on the surface of the promontory? |
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Definition
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Term
| the tympanic plexus recieves contribution from ... |
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Definition
facial
glossopharyngeal
vagus |
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Term
| the tympanic plexus contains ... fibers and ...... that will synapse in the ... ganglion |
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Definition
sensory
preganglionic parasympathetic
otic |
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Term
| the geniculate ganglion is a .... ganglion |
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Definition
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Term
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Definition
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Term
| ....fibers, wich synapse in the ...., branch off of the facial n at the level of the geniculate ganglion as the... |
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Definition
preganglionic parasympathetic
pterygopalatine ganglion
greater petrosal nerve |
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Term
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Definition
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Term
the superior portion of the bony auditory tube contains the ....
the inferior portion contains the... |
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Definition
tensor tympani m.
opening of the bony portion of the auditory (eustachian, pharyngotympanic) tube |
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Term
| the bony portion of the auditory tube lies in parallel with what stucture? |
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Definition
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Term
| chorda tympani exits the middle ear cavity via the... |
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Definition
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Term
| what houses the stapedius m? |
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Definition
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Term
| a red or buldging tympanic membrane may indicate... |
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Definition
| middle ear infection (otitis media) |
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Term
| the peak of the depressed central area of the tympanic membrane. |
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Definition
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Term
| the inner and outter surfaces of the tympanic membrane are lined with... |
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Definition
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Term
| the handle of the malleus attached to tympanic membrane |
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Definition
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Term
| when examined with an otoscope, a .... appears on the tympanic membrane radiated from the inferior portion of the... |
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Definition
cone of light
handle of malleus |
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Term
| relaxed superior portion of the tympanic membrane |
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Definition
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Term
| the .... crosses the inner surface of the tympanic membrane in the are of the... |
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Definition
chorda tympani
pars flaccida |
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Term
| name the 2 ossicles of the inner ear |
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Definition
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Term
name what each of the parts of the incus attach to:
body
long crus
short crus |
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Definition
head of malleus
head of stapes
wall of epitympanic recess |
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Term
| the joints between the occicles are ... joints |
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Definition
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Term
| the motion of the footplate creates fluid waves in the ... of the inner ear. |
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Definition
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Term
| what m pulls the tympanic membrane medially, tensing it, and dampening the effect of sound waves? |
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Definition
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Term
| innervation of tensor tympani m |
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Definition
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Term
| contraction of the this m pulls the footplate away from the oval window and dampens sound energy. |
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Definition
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Term
| innervation of the stapedius m |
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Definition
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Term
| sensitivity to loud noises due to loss of action of the stapedius m. (facial n paralysis) |
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Definition
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Term
| what are the two parts of the inner ear? |
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Definition
bony labyrinth
membranous labyrinth |
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Term
| what is the fluid in the membranous labyrinth? |
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Definition
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Term
outer layer of fluid
inner layer of fluid |
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Definition
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Term
| name the 3 parts of the bony labyrinth |
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Definition
cochlea
vestibule
semicircular canals |
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Term
| how many times is the cochlea coiled? |
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Definition
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Term
the round window opens into the..
the oval window opens into the.. |
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Definition
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Term
| how many semicircular canals are there and at what angle are they set to one another? |
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Definition
3
right angles (90 degree) |
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Term
| there are ...., ...., and .... semicircular canals |
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Definition
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Term
| name the 3 parts of the membranous labyrinth. |
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Definition
cochlear duct
utricle and saccule
3 semicircular canal ducts |
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Term
| the membranous labyrinth is a ... system containing... |
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Definition
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Term
| semicircular canals in both inner ears act in concert to coordinate ... |
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Definition
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Term
| detect positional changes of the head |
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Definition
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Term
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Definition
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Term
| conveys n inpulses concerved with both hearing and equilibrium |
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Definition
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Term
| involves loss of any structure that assists in creating movements at the oval or round windows |
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Definition
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Term
| lesion or damage of any portion of the nervous system that is involvded with the conduction and interpretation of nerve impulses from CN VIII |
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Definition
| sensorineural hearing loss |
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