A&P - Chapter 24 (Part 4)

Question 1

What are the 3 layers of the eye?

Answer 1

1. Sclera
2. Choroid
3. Retina

Question 2

What is the sclera layer?

Answer 2

It is the tough outer coat of the eye

- the white of the eye

Question 3

Cornea

Answer 3

Is the transparent part of the sclera over the iris

Question 4

What is the choroid layer?

Answer 4

It is the pigmented vascular layer that prevents scattering of light

Question 5

What does the front part of the choroid layer made up of? (2)

Answer 5

1. Ciliary muscle

2. Iris

Question 6

Iris

Answer 6

Coloured part of the eye

Question 7

Pupil

Answer 7

Is the hole in the centre of the iris

Question 8

What layer is the retina?

Answer 8

The most inner layer of the eye

Question 9

What does the retina contain? (2)

Answer 9

1. Rods

2. Cones

Question 10

What are rods receptors for?

Answer 10

Night vision

Question 11

What are cones receptors for? (2)

Answer 11

1. Day vision

2. Colour vision

Question 12

Conjunctive

Answer 12

Mucous membrane covering the front surface of the sclera and lining the eyelid

Question 13

How does the conjuctiva keep moist?

Answer 13

By lacrimal glands

Question 14

Lens

Answer 14

Transparent body behind the pupil

Question 15

What does the lens do?

Answer 15

Focuses light rays on the retina

Question 16

What are 2 types of eye fluids?

Answer 16

1. Aqueous humor

2. Vitreous humor

Question 17

Where do you find aqueous humor?

Answer 17

In the anterior chamber in the front of the lens

Question 18

Where do you find vitreous humor?

Answer 18

In the posterior chamber behind the lens

Question 19

Where is the blind spot in the eye?

Answer 19

The point of exit for the optic nerve where it is free of receptors

Question 20

What is critical in vision? (3)

Answer 20

1. Size of pupil
2. Shape of eye
3. Shape of lenses