Structures of the Eye

Question 1

Cornea

Answer 1

Outer covering of the eye (protection)

Question 2

Pupil

Answer 2

Adjustable opening in the center of the eye through which light enters

Question 3

Iris

Answer 3

Ring of muscle tissue that forms the colored portion of the eye around the pupil; controls the size of the pupil opening

Question 4

Lens

Answer 4

Transparent structure behind the pupil that changes shape to help focus images on the retina

Question 5

Accommodation

Answer 5

Lens changes shapes to focus images on the retina

Question 6

Retina

Answer 6

The light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information

Question 7

Blind spot

Answer 7

The point at which the optic nerve leaves the eye. No receptor cells are located there.

Question 8

Fovea

Answer 8

Central focal point in the retina, around which the eye’s cones cluster.

Question 9

Optic nerve

Answer 9

The nerve that carries neural impulses from the eye to the brain.

Question 10

Bipolar and amacrine cells

Answer 10

Located in the retina; black and white rods and cones and ganglion cells; pass information from rods and cones to ganglion cells