S.A. special senses

Question 1

vallate papillae are?

Answer 1

cylindrical, largest, least in number, bitter receptor, V- shaped form, anterior to sulcus terminalis

Question 2

fungiform papillae?

Answer 2

mushroom shaped, most numerous, tip of tongue

Question 3

foliate papillae?

Answer 3

posterior roof/ mouth lateral margins

Question 4

filiform papillae?

Answer 4

thread-like, sensitive to touch (no taste)

Question 5

nerve supply to tongue?

Answer 5

ant. 2/3 CN VII> chorda tympani> pterygopalatine> solitary tract & nucleus (sweet, salt, sour)
post. 1/3 (bitter) CN IX
Epiglottis & larynx CN X (bitter)

Question 6

what is the foramen caecum?

Answer 6

embryonic diverticulum (dorsal depression of tongue)

Question 7

OLFACTORY BULB?

Answer 7

limbic area

contains granular, mitral, tufted cells & glomerulus

Question 8

olfactory Nerve supply?

Answer 8

CN 1 > cribriform plate> lateral olfactory stria> Uncus or medial olfactory stria> subcallosal gyrus

Question 9

where are the pseudistraified columnar epi. ?

Answer 9

upper surface of superior concha- main chemoreceptor

Question 10

retina develops from?

Answer 10

ectoderm

Question 11

sclera derived from

Answer 11

dura

Question 12

retinal cells include?

Answer 12

amacrine, bipolar, ganglion, horizontal, pigments, rods, cones

Question 13

vision nerve supply?

Answer 13

retina > optic N.> optic chiasm> optic tract> lateral geniculate nucleus> optic radiations> calcarine fissure of occipital lobe

Question 14

where is the fovea centralis?

Answer 14

center of macula lutea- provides greatest acuity, only CONES

Question 15

where is your blind spot?

Answer 15

optic disc, where optic nerve & vessels attach to the eye

Question 16

what controls the lens shape?

Answer 16

ciliary muscle

Question 17

auditory nerve supply

Answer 17

spiral gang.> cochlear n.> ventral then dorsal cochlear nucleus> lateral lemniscus> inf. colliculus> medial geniculate> temproal lobe

Question 18

sound travel path

Answer 18

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

Question 19

middle ear to nasopharyngeal area is?

Answer 19

auditory tube aka eustachian tube

Question 20

semicircular canals sense

Answer 20

angular acceleration & decelleration

Question 21

utricle & saccule sense

Answer 21

linear acceleration

Question 22

cochlea is bathed in?

Answer 22

perilymph

Question 23

glaucoma is?

Answer 23

intraocular pressure

Question 24

vitreous humor is?

Answer 24

posterior

Question 25

aqueous humor is?

Answer 25

anterior

Question 26

cones are for?

Answer 26

color

Question 27

what structures contain endolymph?

Answer 27

scala media
saccule
utricle semicircular ducts

Question 28

nuclei associated with taste?

Answer 28

superior salvatory