Function of parts of the eye

Question 1

Tough outermost connective tissue
layer; protects and supports eyeball

Answer 1

Sclera

Question 2

Refracts (bends) light rays

Answer 2

Cornea

Question 3

Blood vessel layer; absorbs stray light

Answer 3

Choroid

Question 4

Holds the lens in place

Answer 4

Ciliary body

Question 5

Accommodation: changes the shape
of the lens for near or far vision

Answer 5

Ciliary muscle

Question 6

Regulates entrance of light into retina

Answer 6

Iris

Question 7

Opening in iris; admits light into retina

Answer 7

Pupil

Question 8

Contains sensory receptors for light

Answer 8

Retina

Question 9

Receptors for black and white, dim-
light vision; peripheral vision

Answer 9

Rods

Question 10

Receptors for color vision; bright-
light vision

Answer 10

Cones

Question 11

Largest concentration of cone
cells; makes acute vision possible

Answer 11

Fovea centralis

Question 12

Transmits visual signals to brain

Answer 12

Optic nerve

Question 13

Refracts (bends) and focuses light rays

Answer 13

Lens

Question 14

Support lens; attach lens to ciliary body

Answer 14

Suspensory
ligaments

Question 15

Transmits light rays; supports anterior
compartment

Answer 15

Aqueous humor

Question 16

Transmits light rays; supports posterior
compartment

Answer 16

Vitreous humor

Question 17

The lens, with help from the
cornea and the humors, focuses images
onto the retina

Answer 17

Refraction

Question 18

Pigment in Rod Cells

Answer 18

Rhodopsin

Question 19

the part of the brain that processes sensory information from the body, including touch, pain, temperature, and pressure

Answer 19

somatosensory cortex