Chapter 17 Quiz

Question 1

normal adjustment of the eye to focus on objects from far to near

Answer 1

accommodation

Question 2

area behind the cornea and in front of the lens and iris

Answer 2

anterior chamber

Question 3

fluid produced by the ciliary body and found in the anterior chamber`

Answer 3

aqueous humor

Question 4

consisting of two surfaces that are rounded, elevated, and curved evenly

Answer 4

biconvex

Question 5

middle, vascular layer of the eye, between the retina and sclera

Answer 5

choroid

Question 6

structure on each side of the lens that connects the choroid and iris

Answer 6

ciliary body

Question 7

photoreceptor cell in the retina that transforms light energy into a nerve impulse

Answer 7

cone

Question 8

delicate membrane lining the eyelids and covering the eyeball

Answer 8

conjunctiva

Question 9

fibrous transparent layer of clear tissue that extends over the anterior portion of the eyeball

Answer 9

cornea

Question 10

tiny pit or depression in the retina that is the region of clearest vision

Answer 10

fovea centralis

Question 11

posterior, inner part of the eye

Answer 11

fundus of the eye

Question 12

pigmented layer that opens and closes to allow more or less light into the eye

Answer 12

iris

Question 13

transparent, biconvex body behind the pupil of the eye

Answer 13

lens

Question 14

yellowish region on the retina lateral to and slightly below the optic disc

Answer 14

macula

Question 15

point at which optic nerve fibers cross in the brain

Answer 15

optic chiasm

Question 16

region at the back of the eye where the optic nerve meets the retina

Answer 16

optic disc

Question 17

cranial nerve carrying impulses from the retina to the brain

Answer 17

optic nerve

Question 18

central opening of the eye, surrounded by the iris, through which light rays pass

Answer 18

pupil

Question 19

bending of light rays by the cornea, lens, and fluids of the eye to bring the rays into focus on the retina

Answer 19

refraction

Question 20

light-sensitive nerve cell layer of the eye containing photoreceptor cells

Answer 20

retina

Question 21

photoreceptor cell of the retina essential for vision in low light and for peripheral vision

Answer 21

rod

Question 22

tough, white outer coat of the eyeball

Answer 22

sclera

Question 23

relay center of the brain

Answer 23

thalamus

Question 24

soft, jelly-like material behind the lens in the vitreous chamber; helps maintain the shape of the eyeball

Answer 24

vitreous humor

Question 25

aque/o

Answer 25

water

Question 26

blephar/o

Answer 26

eyelid

Question 27

cor/o

Answer 27

pupil

Question 28

cycl/o

Answer 28

ciliary body

Question 29

dacry/o

Answer 29

tears, tear duct

Question 30

kerat/o

Answer 30

cornea

Question 31

lacrim/o

Answer 31

tears

Question 32

ocul/o

Answer 32

eye

Question 33

palpebr/o

Answer 33

eyelid

Question 34

papill/o

Answer 34

optic-disc

Question 35

phac/o, phak/o

Answer 35

lens of the eye

Question 36

pupill/o

Answer 36

pupil

Question 37

uve/o

Answer 37

uvea

Question 38

vitre/o

Answer 38

glassy

Question 39

ambly/o

Answer 39

dull, dim

Question 40

dipl/o

Answer 40

double

Question 41

glauc/o

Answer 41

gray

Question 42

mi/o

Answer 42

smaller, less

Question 43

mydr/o

Answer 43

widen, enlarge

Question 44

nyct/o

Answer 44

night

Question 45

phot/o

Answer 45

light

Question 46

presby/o

Answer 46

old age

Question 47

scot/o

Answer 47

darkness

Question 48

xer/o

Answer 48

dry

Question 49

-opia, -opsia

Answer 49

vision

Question 50

-tropia

Answer 50

to turn