Nervous System #2

Question 1

Retina

Answer 1

Light sensitive rod and cone cells converting light stimulus into nerve impules

Question 2

Cornea

Answer 2

Transparent layer that lets light through

Question 3

Conjunctiva

Answer 3

Thin transparent membrane lining cornea and eyelids

Question 4

Pupil

Answer 4

Opening in iris letting light into the eyes

Question 5

Ciliary muscles

Answer 5

Muscles that contract to make the lens thinner

Question 6

Suspensory ligaments

Answer 6

Fine fibers supporting the lens

Question 7

Lens

Answer 7

Biconvex structure made of clear cells that bens light to make a clear image on the retina

Question 8

Aqueous humor

Answer 8

Watery liquid with oxygen and nutrients to nourish the cornea and lens

Question 9

Vitreous humor

Answer 9

Jelly-like liquid supporting the eye

Question 10

Iris

Answer 10

Consists of radial and ring muscles. Changes pupil size to control amount of light entering the eye

Question 11

Sclera

Answer 11

Tough, thick, protective layer of the eye made of opaque white connective tissue

Question 12

Optic nerve

Answer 12

Carries nerve impulses to the cerebral cortex

Question 13

Blind spot

Answer 13

Point where the optic nerve leaves the eye; no light sensitive cells

Question 14

Yellow spot

Answer 14

Most light sensitive spot on retina, filled with colour sensitive cone cells