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Ear
GA36: Midwestern University
56
Anatomy
Professional
08/21/2010

Additional Anatomy Flashcards

 


 

Cards

Term
innervation ot he auricle is by...
Definition
CN V3
Term
innervation around and inside the meatus is by...
Definition
CN X
Term
lower portion of ear is innervated by...
Definition
cervical nn from the cervical plexus
Term
the wall of the lateral 1/3 of the external acoustic meatus is...
the wall of the medial 2/3 is...
Definition
cartilage
bone
Term
the external meatus is .... and must be pulled .... to view the tympanic membrane.
(... in infants)
Definition
sinuous, posterosuperiorly
inferoposteriorly
Term
ear wax
Definition
cerumen
Term
part of the ear that translates sound waves into motion
Definition
middle ear (tympanic) cavity
Term
where is the middle ear housed?
Definition
petrous portion of the temporal bone
Term
expanded region in the later aspect of the roof of the middle ear, in the area of the tympanic membrae
Definition
epitympanic recess
Term
what does the epitympanic membrane house?
Definition
part of the malleus and incus
Term
there is a strong relationship between the floor of the tympanic cavity and what structure?
Definition
internal jugular vein
Term
the medial wall of the tympanic cavity if formed by the .... and houses part of ...
Definition
bony labyrinth
inner ear
Term
the center of the medial wall of the inner ear contains a swelling called a ... which lies over the ...
Definition
promontory
chochlea
Term
what lies on the surface of the promontory?
Definition
tympanic plexus
Term
the tympanic plexus recieves contribution from ...
Definition
facial
glossopharyngeal
vagus
Term
the tympanic plexus contains ... fibers and ...... that will synapse in the ... ganglion
Definition
sensory
preganglionic parasympathetic
otic
Term
the geniculate ganglion is a .... ganglion
Definition
sensory
Term
oval window
Definition
fenestra vestibuli
Term
....fibers, wich synapse in the ...., branch off of the facial n at the level of the geniculate ganglion as the...
Definition
preganglionic parasympathetic
pterygopalatine ganglion
greater petrosal nerve
Term
round window
Definition
fenestra cochleae
Term
the superior portion of the bony auditory tube contains the ....

the inferior portion contains the...
Definition
tensor tympani m.

opening of the bony portion of the auditory (eustachian, pharyngotympanic) tube
Term
the bony portion of the auditory tube lies in parallel with what stucture?
Definition
tensor tympani m.
Term
chorda tympani exits the middle ear cavity via the...
Definition
petrotympanic fissure
Term
what houses the stapedius m?
Definition
the pyramid
Term
a red or buldging tympanic membrane may indicate...
Definition
middle ear infection (otitis media)
Term
the peak of the depressed central area of the tympanic membrane.
Definition
umbo
Term
the inner and outter surfaces of the tympanic membrane are lined with...
Definition
epithelium
Term
the handle of the malleus attached to tympanic membrane
Definition
manubrium
Term
when examined with an otoscope, a .... appears on the tympanic membrane radiated from the inferior portion of the...
Definition
cone of light
handle of malleus
Term
relaxed superior portion of the tympanic membrane
Definition
pars flaccida
Term
the .... crosses the inner surface of the tympanic membrane in the are of the...
Definition
chorda tympani
pars flaccida
Term
name the 2 ossicles of the inner ear
Definition
malleus
incus
stapes
Term
name what each of the parts of the incus attach to:
body
long crus
short crus
Definition
head of malleus
head of stapes
wall of epitympanic recess
Term
the joints between the occicles are ... joints
Definition
synovial
Term
the motion of the footplate creates fluid waves in the ... of the inner ear.
Definition
perilymph
Term
what m pulls the tympanic membrane medially, tensing it, and dampening the effect of sound waves?
Definition
tensor tympani
Term
innervation of tensor tympani m
Definition
V3
Term
contraction of the this m pulls the footplate away from the oval window and dampens sound energy.
Definition
stapedius m
Term
innervation of the stapedius m
Definition
facial n
Term
sensitivity to loud noises due to loss of action of the stapedius m. (facial n paralysis)
Definition
hyperacusis
Term
what are the two parts of the inner ear?
Definition
bony labyrinth
membranous labyrinth
Term
what is the fluid in the membranous labyrinth?
Definition
endolymph
Term
outer layer of fluid
inner layer of fluid
Definition
perilymph
endolymph
Term
name the 3 parts of the bony labyrinth
Definition
cochlea
vestibule
semicircular canals
Term
how many times is the cochlea coiled?
Definition
2 1/2
Term
the round window opens into the..
the oval window opens into the..
Definition
cochlea
vestibule
Term
how many semicircular canals are there and at what angle are they set to one another?
Definition
3
right angles (90 degree)
Term
there are ...., ...., and .... semicircular canals
Definition
anterior
posterior
lateral
Term
name the 3 parts of the membranous labyrinth.
Definition
cochlear duct
utricle and saccule
3 semicircular canal ducts
Term
the membranous labyrinth is a ... system containing...
Definition
closed
endolymph
Term
semicircular canals in both inner ears act in concert to coordinate ...
Definition
equilibrium
Term
detect positional changes of the head
Definition
utricle and saccule
Term
innervation to inner ear
Definition
CN VIII
Term
conveys n inpulses concerved with both hearing and equilibrium
Definition
CN VIII
Term
involves loss of any structure that assists in creating movements at the oval or round windows
Definition
conductive hearing loss
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
Definition
sensorineural hearing loss
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