The Eye

Question 1

List the 5 protective structures of the eye.

Answer 1

(1) eye orbit, (2) eye lids, (3) eye lashes & brows, (4) conjunctiva, and (5) tears from lacrimal glands.

Question 2

________ of tears cause a runny nose.

Answer 2

Excess

Question 3

The outer layer of the eyeball is formed from ______.

Answer 3

sclera

Question 4

The middle layer of the eyeball is called:

Answer 4

choroid

Question 5

The choroid is made of _______ tissue and prevents _____.

Answer 5

vascular tissue, reflection

Question 6

The ______ muscle gives the eye the ability to chage shape for focus.

Answer 6

Ciliary

Question 7

The ______ is in the inner part of the eye and is where impulses attach to optic nerve to occipital lobe.

Answer 7

retina

Question 8

What part of the eye contains visual receptors?

Answer 8

Inner

Question 9

There are more rods than cones (T/F)

Answer 9

True

Question 10

The ____ is the colored part of the eye.

Answer 10

Iris

Question 11

_______ detects light and helps with night vision.

Answer 11

Rods

Question 12

________ detect color and are at the center of the retina.

Answer 12

Cones.

Question 13

The ________ ______ is the blind spot.

Answer 13

optic disk

Question 14

The _______ _______ is a watery type substance in the anterior chamber of the eye.

Answer 14

aqueous humor

Question 15

The aqueous humor is located ____ to the lens.

Answer 15

anterior

Question 16

If the aqueous humor is not draining or is producing too much, the condition called _______ occurs.

Answer 16

glaucoma

Question 17

The ______ ______ is located posterior to the lens and is a jelly-like substance that gives the eyeball its shape and keeps the retinal lining in place.

Answer 17

Vitreous body

Question 18

What nerves supply the eye (3)?

Answer 18

optical, cranial, trigenimal

Question 19

The _______ _______ is near the optic nerve.

Answer 19

fovea centralis

Question 20

When the eye does not have enough cones, a person will be ______ _____.

Answer 20

color blind

Question 21

________ is the light sensitive pigment contained in the ______.

Answer 21

Rhodopsin; rods

Question 22

List the 3 types of muscles of the eye.

Answer 22

(1) extrinsic, (2) intrinsic, (3) ciliary

Question 23

The _______ muscles are voluntary and give the eye the ability to move the eye.

Answer 23

extrinsic

Question 24

The ______ muscles are involuntary, located in the eye structure, and form the iris.

Answer 24

Intrinsic

Question 25

The iris causes the pupils to ________ or _______ to regulate the amount of light into the eye.

Answer 25

constrict, dilate

Question 26

The ________ muscle holds the lense in place and controls its shape.

Answer 26

Ciliary