Eye

Question 1

palpebrae

Answer 1

eyelid

Question 2

iris

Answer 2

pigmented layer

Question 3

pupil

Answer 3

hole

Question 4

lacrimal caruncle

Answer 4

bead in inner eye

Question 5

sclera

Answer 5

white part

Question 6

medial and lateral commisures

Answer 6

where lids come together at ends

Question 7

palpebral fissure

Answer 7

space between the eyelids

Question 8

cornea

Answer 8

dome shape on front

Question 9

lacrimal gland

Answer 9

lateral upper eyeball, squirt tears onto surface

Question 10

lacrimal ducts

Answer 10

where lacrimal gland secretes from

Question 11

superior and inferior lacrimal punctum

Answer 11

drains for eyes

Question 12

circular iris muscle

Answer 12

outer ring, closes/constricts pupil

Question 13

radial iris muscle

Answer 13

inner ring, opens/dilates pupil

Question 14

ciliary muscle

Answer 14

inside muscle behind iris, changes shape of lens

Question 15

fovea centralis

Answer 15

center back of eyeball

Question 16

macula lutea

Answer 16

spot at back of eye where all light focuses

Question 17

optic disc

Answer 17

where wires come together, no photoreceptors, become optic nerve outside eyeball

Question 18

optic nerve goes to

Answer 18

thalamus to occipital lobe

Question 19

aqueous humor

Answer 19

front fluid behind cornea

Question 20

vitreous humor

Answer 20

inside eyeball fluid

Question 21

lens

Answer 21

divides aqueous and vitreous humor

Question 22

retina

Answer 22

inside layer of nervous tissue

Question 23

choroid coat

Answer 23

blood vessels surrounding eye

Question 24

fibrous tunic

Answer 24

sclera and cornea

Question 25

vascular tunic

Answer 25

choroid coat and muscle tissue

Question 26

nervous tunic

Answer 26

retina

Question 27

retina layers

Answer 27

pigmented epithelium outer segments of rods and cones nuclei of rods and cones outer synaptic layer nuclei of bipolar neurons inner synaptic layer ganglion cell layer

Question 28

visual pathway from retina

Answer 28

optic disc optic nerve optic chiasm optic tract lateral geniculate nucleus optic radiations primary visual cortex

Question 29

lateral geniculate nucleus

Answer 29

thalamus, ganglion cells synapse with interneurons

Question 30

cones

Answer 30

color and acquity

Question 31

rods

Answer 31

low light, grayscale, contrast

Question 32

in light rods and cones

Answer 32

cones on, rods off

Question 33

in the dark

Answer 33

rhodopsin inactive, sodium channels open, rod depolarized, bipolar cell inhibited

Question 34

in the light

Answer 34

rhodopsin active, sodium channels close, rod hyperpolarized, bipolar cell excited

Question 35

glutamate

Answer 35

neurotransmitter released by rod

Question 36

cyclic gmp

Answer 36

unlocks sodium channels

Question 37

rhodopsin made of

Answer 37

retinal and opsin

Question 38

rhodopsin changes shape

Answer 38

in response to light (isomerization)