Eye

Question 0

layers of the cornea

Answer 0

anterior epithelium, substantia propria, posterior limiting membrane

Question 1

Cornea

Answer 1

outer area of the eye.

Question 2

limbus

Answer 2

junction b/n cornea and sclera

Question 3

Basic Structure of Eye (3 Concentric Layers = )

Answer 3

1. Fibrous
2. Vascular
3. Nervous

Question 4

Fibrous Layer consists of..

Answer 4

cornea & sclera

Question 5

Outside epithelial layer type

Answer 5

nonkeratinized stratified squamous

Question 6

purpose of outside corneal layer

Answer 6

to maintain strength and stability

Question 7

Sclera purpose

Answer 7

attachment point for extraocular mm.

Question 8

Vascular Layer regions

Answer 8

Iris, Ciliary body, choroid

Question 9

Iris muscles

Answer 9

1. Constrictor (circular) m.

2. Dilator (radial) m.

Question 10

Iris’ Function

Answer 10

change the amount of light entering the eye

Question 11

Constrictor m. function

Answer 11

let less light into the eye

Question 12

Dilator muscle function

Answer 12

let more light in

Question 13

Glaucomma

Answer 13

increase in intraocular pressure

Question 14

Ora serrata

Answer 14

junction between nonsensitive retina & sensitive retina

Question 15

Rods

Answer 15

• low light vision

- important in nocturnal animals

Question 16

Cones

Answer 16

• bright light

- color vision

Question 17

Fovea centralis

Answer 17

• area of greatest visual acuity

- lots of photoreceptors here

Question 18

optic nerve

Answer 18

blind spot in the eye

Question 19

purpose of vitreous humor

Answer 19

maintain shape and pressure

Question 20

composition of vitreous humor

Answer 20

• 99% water

- small amount of collagen type 4

Question 21

Lens Components

Answer 21

1. Capsule
2. Anterior epithelium
3. Fiber of lens

Question 22

Lens Capsule

Answer 22

cuboidal/columnar epithelium around entire cell

Question 23

Anterior epithelium

Answer 23

only on anterior surface of lens

Question 24

Fiber of lens

Answer 24

cells w/o organelles, crystallines,

Question 25

cataracs

Answer 25

occurs when fiber of lens hardens