sight

Question 1

eyelid

Answer 1

covers and protects the eye, thin skin

Question 2

eyelashes

Answer 2

fine hairs that function to protect the eyes from dust and debris.

Question 3

conjunctiva

Answer 3

is a covering around the eye and under the eyelids

Question 4

conjunctivitis

Answer 4

pink eye

Question 5

lacrimal gland

Answer 5

produce tears, which drain into the nasal cavity via the LACRIMAL DUCT.

Question 6

function of tears

Answer 6

to moisten and lubricate the eye surface, and it has enzymes that kill bacteria.

Question 7

cornea

Answer 7

transparent dome that focuses light

Question 8

sclera

Answer 8

continuation of cornea, going toward the back of the eye (white of the eye)

Question 9

optic nerve

Answer 9

exits at optic disk and transmits information from the eye to occipital lobe of the brain.

Question 10

optic neuritis

Answer 10

inflammation of the optic nerve

Question 11

choroid

Answer 11

contains blood vessels

Question 12

ciliary body

Answer 12

holds the lens in place

Question 13

lens

Answer 13

helps focus

Question 14

iris

Answer 14

colored portin of the eye

Question 15

pupil

Answer 15

opening for light to enter

Question 16

aqueous humor

Answer 16

liquid surrounding the lens

Question 17

outer tunic of the eye

Answer 17

cornea, sclera, optic nerve

Question 18

middle tunic of the eye

Answer 18

choroid, ciliary body, lens, iris, pupil, aqueous humor

Question 19

inner tunic of the eye

Answer 19

retina, fovea Centralia, optic disc, vitreous humor

Question 20

retina

Answer 20

visual receptor cells

Question 21

fovea centralis

Answer 21

region of the sharpest vision, also called the macula

Question 22

optic disc

Answer 22

where nerve fibers leave the eye, creating the blind spot

Question 23

vitreous humor

Answer 23

supports internal parts, fluid within the eye

Question 24

heterochromia

Answer 24

one eye is a different color than the other

Question 25

what determines the color of your eye

Answer 25

melanin