Special senses Flashcards

1
Q

projections from the tongue where taste buds are embedded

A

taste papillae

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2
Q

cylindrical, largest, least in number, bitter receptors

A

circum vallate

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3
Q

mushroom shaped, most numerous taste receptors, tip of tongue

A

fungiform

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4
Q

posterior roof/mouth lateral margins

A

foliate

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5
Q

threadlike sensitive to touch (no taste)

A

filiform

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6
Q

anterior 2/3 of tongue nerve/taste

A

cn7

sweet, sour, salty

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7
Q

cn7 pathway

A

cn7 –> chorda tympani –> pterygopalatine –> solitary tract and nucleus

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8
Q

posterior 1/3 of tongue nerve/taste

A

cn9

bitter

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9
Q

epiglottis and larynx nerve/taste

A

cn10

bitter

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10
Q

what is the embryonic thyroid diverticulum (dorsal depression of tongue) called

A

foramen caccum

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11
Q

limbic area that contains granular, mitral and tufted cells and aglomerulus

A

olfactory bulb

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12
Q

cn1 pathway

A

cn1–> cribiform plate of ethmoid –> lateral olfactory stria –> uncus or medial olfactory stria –> subcallosal gyrus

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13
Q

what epithelium is the upper surface of superior concha - main chemo receptor

A

pseudostratified columnar epithelium

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14
Q

what does the retina develop from

A

ectoderm

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15
Q

where is sclera derived from

A

dura

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16
Q

what do retinal cells include

A

amacrine, bipolar, ganglion, horizontal and pigments, rods and cones (rhodopsin)

17
Q

what is the nerve supply of vision

A
retina
optic nerve
optic chiasm
optic tract (connects superior colliculus)
lateral geniculate nucleus
optic radiations
calcarine tissue of the occipital lobe
18
Q

structures in the retina

A

fovea centralis
optic disc
ciliary muscles

19
Q

fovea centralis location and purpose

A

center of macula lutea
greatest acuity
only has cones

20
Q

blind spot where optic nerve and vessels attach to the eye

A

optic disc

21
Q

what do the ciliary muscles do

A

controls lens shape

22
Q

auditory nerve supply

A
spiral ganglion
cochlear nerve
ventral then dorsal cochlear nucleus
lateral lemniscus
inferior colliculus
medial geniculate
temporal lobe "LIM"
23
Q

sound travels

A
ext. auditory meatus
tympanic membrane
handle of malleus
head of malleus
incus
stapes
oval window
cochlea
round window
24
Q

what do semicircular canals detect

A

angular acceleration and deceleration

25
what do the utricle and saccule detect
linear acceleration
26
where is the eustachian tube (auditory tube)
millde ear to nasopharyngeal area
27
what fluid does the cochlea have
perilymph
28
what sounds does the (cochlea) base tympanic membrane detect
high pitch
29
what is glaucoma and how does it occur
intraocular pressure | blockage of the canal of schlemm
30
what do the semicircular ducts detect
rotation
31
what stimulates hair cells in cochlea
tectorial membrane
32
vitreous humor is ___
posterior
33
aqueous humor is ___
anterior
34
what is the IVD remnant
nucleus pulposus
35
what do cones detect
color
36
which structures contian endolymph
scala media saccule utricle semicircular ducts
37
where is the confluence of sinuses
EOP, IOP
38
what do rods detect
low level of light, no color