sci8 eye quiz

Question 1

anterior cavily

Answer 1

at the front of the eye, and is divided into two parts: anterior chamber( the front) , and the posterior chamber (the back).

Question 2

aqueous humor

Answer 2

a clear water that refracts light, inflates the eyeball so it keeps its shape, provides nutrients for the cells

Question 3

lens

Answer 3

refracts image to the eye. is a convex lens, light rays converge when passing through it. made of elastic proteins. it is very flexible

Question 4

iris

Answer 4

a ring of coloured tissue. colour has no function. it controls the size of the pupil

Question 5

pupil

Answer 5

an opening where light enters the eye

Question 6

cornea

Answer 6

is transparent, refracts light into the eye

Question 7

suspensory ligaments (zonule of zinn)

Answer 7

elastic proteins that connect the lens to the ciliary muscle

Question 8

ciliary muscle/body

Answer 8

will pull or relax to change the shape of the lens, and it allows us to focus at different distances

Question 9

conjunctiva

Answer 9

a protective tissue under the eyelid that seals off the back of the eye. prevents debris or germs to from entering the back of the eye

Question 10

inferior rectus muscle

Answer 10

the lower muscle that helps point the eye in different directions

Question 11

posterior cavity

Answer 11

back of the eye

Question 12

vitreous humor

Answer 12

clear liquid inside the posterior cavity. same liquid as in the aqueous humor

Question 13

optic disc

Answer 13

where the optic nerve is attached to the eyeball. is also known as the blind spot. processes information given by the retina and sends it down the optic nerve via nerve impulses. no rods or cones

Question 14

optic nerve

Answer 14

carries nerve impulses to the brain and contains arteries and veins

Question 15

central retinal vein (blue)

Answer 15

inside the optic nerve. takes away blood and wastes from the eye

Question 16

central retinal artery (red)

Answer 16

inside optic nerve. brings blood, food, oxygen to the eye

Question 17

macula

Answer 17

5mm diameter. has lots of comes and is made for detail vision

Question 18

fovea

Answer 18

the center of the macula, and is for fine detail vision

Question 19

retina

Answer 19

the inner layer of the eye. the image hits the retina, which has cones and rods. (rods detect low light, while cones detect colour)

Question 20

choroid

Answer 20

middle layer of the eye, contains blood vessels

Question 21

sclera

Answer 21

outer layer of the eye, is opaque and white. very thick and is used to protect your eye

Question 22

superior rectus muscle

Answer 22

upper muscle used to point your eye in different directions