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Anatomy > Eye and Vision > Flashcards

Eye and Vision Flashcards

Exam 3

1
Q

what are the accessory structures of the eye

A

palpebrae
eyelashes
muscles
conjunctiva
lacrimal apparatus

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2
Q

what is the lacrimal apparatus function

A

to wash and clean eye surface

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3
Q

what does the lacrimal gland do

A

secretes tears

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4
Q

what are the components anatomically of the lacrimal apparatus

A

lacrimal gland
lacrimal ducts
lacrimal canaliculi
lacrimal sac
nasolacrimal duct
nasal cavity

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5
Q

what do extrinsic eye muscles do

A

move eyeball

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6
Q

what are the 6 extrinsic eye muscles

A

superior rectus
inferior rectus
medial rectus
lateral rectus
superior oblique
inferior oblique

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7
Q

superior rectus fxn

A

look up

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8
Q

inferior rectus fxn

A

look down

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9
Q

medial rectus fxn

A

loook towards nose

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10
Q

lateral rectus mescle fxn

A

look away from nose

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11
Q

superior oblique muscle fxn

A

look downward and lateral

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12
Q

inferior oblique muscle fxn

A

look upward and medially

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13
Q

generic parts of the eye

A

fibrous tunic
vascular tunic
nervous tunic
anterior cavity
lens
posterior cavity

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14
Q

fibrous tunic fxn

A

support/physical protection. the attachment site for extrensis eye muscles

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15
Q

vascular tunic does what

A

is a dark pigment absorbing excess light . has capillaries and lymphatics

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16
Q

what is the nervous tunic

A

retina

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17
Q

what is in the anterior cavity

A

anterior and posterior chamber

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18
Q

what does the lens do

A

focus light on the retina

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19
Q

what are the 2 components of fibrous tunic

A

sclera
cornea

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20
Q

what is the sclera

A

white part of eye

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21
Q

what is the cornea

A

front portion of eye

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22
Q

what is the corneum epithelium

A

outmost barrier of cornea

23
Q

what is the conjuctivia

A

part of the fibrous tunic, superficial, extends off eye like a curve

24
Q

what are the main parts of the vascular tunic

A

choroid
ciliary body
Iris

25
Q

what are the 3 parts of ciliary body

A

ciliary muscles
ciliary processes
suspensory ligament

26
Q

ciliary muslces def

A

intrinsic eye muslces that control lens shape

27
Q

ciliary processes def

A

epithelium that makes aquous humor

28
Q

suspensory ligament def

A

connect cilary muscles to the lens

29
Q

where is the cilariy muscles location

A

in the ciliary body of the vascular tunic of the eye

30
Q

where is the choroid location

A

vascular tunic

31
Q

where is the cornea location

A

in the fibrous tunic of the eye

32
Q

iris def

A

intrisnic eye muscles that control diameter of puil

33
Q

what are the 3 parts of iris

A

pupil
radial muscles
circular muslces

34
Q

what do radial muslces do

A

make it bigger (pupil)
fxn of iris

35
Q

what do circular muscles do

A

make it smaller (pupil)
fxn of iris

36
Q

what is apart of the nervous tunic

A

retina

37
Q

what does the retina contain

A

photoreceptors

38
Q

what are the 2 photreceptors. what do each see

A

cones . acuity/color
rods . low vision/b+w

39
Q

what is the copora lutea

A

part of the neural part of the retina
is mostly cones
has the highest visual activity

40
Q

what is in the fuvea centralis

A

cones only

41
Q

what is the optic disk

A

blind spot, where the optic never exits

42
Q

what does the optic disk lack

A

photoreceptors

43
Q

what does the fovea centralis look like

A

that liitle indent in the circle

44
Q

what does the copora lutea surround

A

the fovea centralis

45
Q

what is the main part of the anterior cavity

A

aqueous humor

46
Q

how is aqueous humor formed and resorped

A

enters at posterior chamer , through pupil, and then out through the anterior chamer

47
Q

what is the function of aqueous humor

A

nourish the cornea/lens

48
Q

what is in the posterior cavity

A

vitreous humor

49
Q

where is aqueous humor
vs
vitreous humor

A

anterior cavity
vs
posterior cavity

50
Q

function of the vitreous humor

A

maintian shape of eye
hold retina against choroid

51
Q

funciton of lens

A

focus light on retina
refraction of light

52
Q

farther needs more of less bending

A

little bending
flatter lens

53
Q

closer needs more or less bending

A

more bending
rounder lens

Anatomy (18 decks)

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