Nervous System #2 Flashcards Preview

Grade 12 LS 2016 > Nervous System #2 > Flashcards

Flashcards in Nervous System #2 Deck (14):
1

Retina

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

2

Cornea

Transparent layer that lets light through

3

Conjunctiva

Thin transparent membrane lining cornea and eyelids

4

Pupil

Opening in iris letting light into the eyes

5

Ciliary muscles

Muscles that contract to make the lens thinner

6

Suspensory ligaments

Fine fibers supporting the lens

7

Lens

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

8

Aqueous humor

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

9

Vitreous humor

Jelly-like liquid supporting the eye

10

Iris

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

11

Sclera

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

12

Optic nerve

Carries nerve impulses to the cerebral cortex

13

Blind spot

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

14

Yellow spot

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