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
Q

what do the utricle and saccule detect

A

linear acceleration

26
Q

where is the eustachian tube (auditory tube)

A

millde ear to nasopharyngeal area

27
Q

what fluid does the cochlea have

A

perilymph

28
Q

what sounds does the (cochlea) base tympanic membrane detect

A

high pitch

29
Q

what is glaucoma and how does it occur

A

intraocular pressure

blockage of the canal of schlemm

30
Q

what do the semicircular ducts detect

A

rotation

31
Q

what stimulates hair cells in cochlea

A

tectorial membrane

32
Q

vitreous humor is ___

A

posterior

33
Q

aqueous humor is ___

A

anterior

34
Q

what is the IVD remnant

A

nucleus pulposus

35
Q

what do cones detect

A

color

36
Q

which structures contian endolymph

A

scala media
saccule
utricle
semicircular ducts

37
Q

where is the confluence of sinuses

A

EOP, IOP

38
Q

what do rods detect

A

low level of light, no color