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Flashcards in eye Deck (75)
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1

where is the eye derived from

meso and ectoderm

2

what is mesodermally derived

fibrous coats

3

ectoderm creates

lens retina cornea and pigmented layers

4

how many tunics

3

5

name the 3 tunics

fibrous, vascular, and nervous/retina

6

fibrious tunic is composed of

sclera and cornea

7

what is sclera

white part of eye

8

what is role of sclera

-maintain shape if inside eye pressure increases
-tiny openings allow structures to pass through

9

what structures pass through the eye

blood vessels
neurons

10

what attaches to the sclera

extra ocular muscles

11

anteriorly: what is sclera lined w/....what are the transitions between

conjunctiva, transition to cornea at limbus

12

posteriorly: continuous w/ fibrous sheath that covers which cn

2

13

what part of sclera is opaque

sclera

14

what is the anterior part called

cornea

15

describe cornea

clear, transparent

16

primary role of cornea

refractory

17

convex anterior or post

ant

18

list the 5 layers of cornea from ant to post

corneal epithelium, anterior limiting lamina, substantia propria, posterior limiting lamina, endothelium

19

what part is composed of the choroid, ciliariary body, and iris

vascular tunic

20

choroid blood supply

rich

21

where is choroid firmly attached to sclera

where the optic nerve penetrates it

22

what is special about choroid and light

it is dark pigmented to limit the passage of light

23

what is the ciliary body continuous with

choroid and iris

24

what does the ciliary body produce

aqueous fluid and GAGs of vitrous body

25

contraction of ciliary muscle allows lens to become ____ allow for ________ vision

convex; near

26

what is the colored part of the eye

iris

27

which part of eye has cooling effect

choroid : vascular tunic

28

where is ciliary muscle located

ciliary body

29

which two muscles are in the iris

sphicter pupillae and dilator pupillae

30

what suspends the lens

ciliary body