Chapter 17

Front 1

anterior chamber

Back 1

area behind the cornia; in front of the lens and iris. It contains aqueous humor

Front 2

aqueous humor

Back 2

fluid produced by te ciliary body and foudn in the anteiror chamber

Front 3

choroid

Back 3

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

Front 4

ciliary body

Back 4

structure on each side of lens that connects the choroid and iris; contorl shape of lens; secretes acqueous humor

Front 5

cone

Back 5

photoreceport cell; repsonbile for color and central vision

Front 6

conjunctiva

Back 6

delicate membrane lining the eylids and covering the anterior portion of the eyeball

Front 7

fovea centralis

Back 7

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

Front 8

fundus of the eye

Back 8

posteiror, inner part fo the eye

Front 9

iris

Back 9

colored portion of eye

Front 10

lens

Back 10

trasnpartant biconvex body behind pupil; its beds light to bring them into focus

Front 11

macula

Back 11

yellowish region on the retina below the optic disc; contains the fovea centralis

Front 12

optic chiasm

Back 12

point at whih the fibers of the optic nerve cross in the brain (chiasm means crossing)

Front 13

optic disc

Back 13

region at the back of the eye where the optic nerve meets the retina. Blinds spot of eye; no rods or cones; insensitive to live

Front 14

optic nerve

Back 14

cranial nerve carries impulses from retina to brain (cerebral cortex)

Front 15

retina

Back 15

light-sensitive nerve cell layer containing phorotreceptor cells (rods and cones)

Front 16

rod

Back 16

photoreceptor cell of the reina for vision in dim light and for peripheral vision

Front 17

sclera

Back 17

tough, white outer coat of eyeball

Front 18

vitreous humor

Back 18

soft, jelly-like material behidn the lens; helps maintian the shape of eyeball

Front 19

auditory canal

Back 19

channel leads from pinna to eardrum

Front 20

auditory meatus

Back 20

auditory canal

Front 21

auditory nerve fibers

Back 21

carry impulses from the inner ear to the brain (cerebral cortex)

Front 22

auditory tube

Back 22

channel between middle ear and nasopharynx; eustachian tube

Front 23

auricle

Back 23

flap of the ear; pinna

Front 24

cerumen

Back 24

ear wax

Front 25

cochlea

Back 25

snail-shpared, tube in inner hear - contained hearing-sensitive receptor cells

Front 26

endolymph

Back 26

fluid within the labyrinth of inner ear

Front 27

eustachian tube

Back 27

auditory tube

Front 28

incus

Back 28

second ossicle of the middle ear

Front 29

labyrinth

Back 29

maze-like series of canals in inner ear; cochlea, vestibule, and semicircular canals

Front 30

malleus

Back 30

first ossicle of the middle ear; malleus means hammer

Front 31

organ of Corti

Back 31

sensitive auditoyr receptor area foudn in cochlea of inner ear

Front 32

ossicle

Back 32

small bone of ear

Front 33

oval window

Back 33

membrane between middle and inner ear

Front 34

perilymph

Back 34

fluid contained in the labyrinth of the inner ear

Front 35

pinna

Back 35

auricle; flap of the ear

Front 36

semicircular canals

Back 36

passages in the inner ear associated with maintaining equilibrium

Front 37

stapes

Back 37

third ossciel of middle ear

Front 38

tympanic membrane

Back 38

membrane between out and middle ear; eardrum

Front 39

vestibule

Back 39

ventral caivty of the labryinth, connects semicircular cansl and the cochlea; saccule and utricle are its two strucutres and help maintain equilibrium