Sensory System

Front 1

Sclera

Back 1

tough, protective covering of the outside of the eye; the "white" of the eye

Front 2

Cornea

Back 2

transparent tissue that covers the front of the eye over the pupils

Front 3

Ciliary muscle

Back 3

muscular body that allows the eye to focus through contraction and relaxation

Front 4

iris

Back 4

controls the amount of light; gives the eye characteristic color

Front 5

Retina

Back 5

thin, innermost lining of the eye that contains millions of nerve cells to coordinate and transmit signals to the optic nerve

Front 6

Aqueous humor

Back 6

fluid that fills anterior and posterior chambers; circulates through the pupil and empties into canal of Schlemm

Front 7

Vitreous humor

Back 7

fluid that fills the cavity posterior to the lens

Front 8

Crystalline lens

Back 8

provides for the convergence and refraction of light rays and images onto the retina; enables vision to be focused

Front 9

Optic nerve

Back 9

leaves the eye through the retina at the location of the optic disc

Front 10

Macula

Back 10

part of the retina responsible for providing optimal visual focusing