Chapter 17 - Sense Organs Flashcards

1
Q

Accomodation

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Anterior Chamber

A

Area behind the cornea and in front of the lens and iris; contains aqueous humor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Aqueous Humor

A

Fluid produced by the ciliary body and found in the anterior chamber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Biconvex

A

Consisting of two surfaces that are rounded, elevated, and curved evenly, like part of a sphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Choroid

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Ciliary Body

A

Structure surrounding the lens that connects the choroid and iris. Contains ciliary muscles that control shape of lens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cone

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Conjunctiva

A

Delicate membrane lining the undersurface of the eyelids and covering the anterior eyeball

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Cornea

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Fovea Centralis

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Fundus of the Eye

A

Posterior, inner part of the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Iris

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Lens

A

Transparent, biconvex body behind the pupil of the eye; refracts light rays to bring them into focus on the retina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Macula

A

Yellowish region on the retina lateral to and slightly below the optic disc; contains fovea centralis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Optic Chiasm

A

Point at which optic nerve fibers cross in the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Optic Disc

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Optic Nerve

A

Cranial nerve carrying impulses from the retina to the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Pupil

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Refraction

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Retina

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Rod

A

Photoreceptor cell of the retina essential for vision in dim light and for peripheral vision

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Sclera

A

Tough, white outre coat of the eyeball

23
Q

Thalamus

A

Relay center of the brain. Optic nerve fibers pass through the thalamus on their way to the cerebral cortex.

24
Q

Vitreous Humor

A

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

25
aque/o
water
26
blephar/o | palpebr/o
eyelid
27
conjunctiv/o
conjunctiva
28
cor/o | pupill/o
pupil
29
corne/o | kerat/o
cornea
30
cycl/o
ciliary body or muscle of the eye
31
dacry/o | lacrim/o
tears, tear duct
32
ir/o | irid/o
iris
33
ocul/o | ophthalm/o
eye
34
opt/o | optic/o
eye, vision
35
papill/o
optic disc; nipple-like
36
phac/o | phak/o
lens of the eye
37
retin/o
retina
38
scler/o
sclera
39
uve/o
uvea; vascular layer of the eye
40
vitre/o
glassy
41
ambly/o
dull, dim
42
dipl/o
double
43
glauc/o
gray
44
mi/o
smaller, less
45
mydr/o
widen, enlarge
46
nyct/o
night
47
phot/o
light
48
presby/o
old age
49
scot/o
darkness
50
xer/o
dry
51
-opia
vision
52
-opsia
vision
53
-tropia
to turn