CH 14 : Key Terms - Eyes

Question 1

Surrounds the pupil and gives eyes their color

Answer 1

Iris

Question 2

Innermost layer of the eye containing two types of visual receptors

Answer 2

Retina

Question 3

Fluid in the anterior chamber that provides nourishment for the lens and cornea and bends light rays to focus them sharply onto the retina

Answer 3

Aqueous Humor

Question 4

White, outermost layer that provides strength, structure, and shape to the eye

Answer 4

Sclera

Question 5

Cause the lens to change shape when they contract or expand

Answer 5

Ciliary Muscles

Question 6

Small opening for drainage of aqueous humor

Answer 6

Schlemm’s Canal

Question 7

Fluid to bathe, moisten, and lubricate the eye; serve a protective role by killing bacteria and washing away foreign debris

Answer 7

Tears

Question 8

Attached to the retina;, transmits visual information to the brain

Answer 8

Optic nerve

Question 9

Dark-blue middle layer that supplies blood to the entire eye

Answer 9

Choroid

Question 10

Attach the ciliary body and muscles, to the lens

Answer 10

Suspensory ligaments

Question 11

Globe-shaped organ that consists of three layers

Answer 11

Eyeball

Question 12

Attached to the lens; includes several ciliary muscles

Answer 12

Ciliary body

Question 13

Transparent bulge of the sclera that allows light into the eye

Answer 13

Cornea

Question 14

Visual receptors in the retina that function in dim lighting to produce images in black and white

Answer 14

Rods

Question 15

The process of rounding and flattening of the lens that enables focus in both near and far vision

Answer 15

Accommodation

Question 16

Produce tears that flow over the eye’s surface

Answer 16

Lagrimal Glands

Question 17

Dilates to allow more light to enter the eye; constricts to decrease the amount of light entering the eye

Answer 17

Pupil

Question 18

Jellylike substance in the posterior chamber that gives shape to the eye and bends light rays to focus them sharply onto the retina

Answer 18

Vitreous Humor

Question 19

Thin mucous membrane covering the outer surface of the eye that contains blood vessels and secretory glands

Answer 19

Conjunctiva