Sense Organs: The Eye and the Ear Vocabulary, Chapter 17

45 cards

Chapter 17, Sense Organs Vocabulary, Language of Medicine, 8th Edition


 
  
Created Dec 27, 2009
by
marysummer

 

 
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1
accommodation
 
Normal adjustment of the eye to focus on objects from far to near.
2
anterior chamber
 
Area behind the cornea and in front of the lens and iris.
3
aqueous humor
 
Fluid produced by the cilary body and found in the anterior chamber.
4
biconvex
 
Having two sides that are rounded, elevated and curved evenly, like part of a sphere.
5
choriod
 
Middle, vascular layer of the eye, between the retina and the sclera.
6
ciliary body
 
Structure on each side the lens that connects the choroid and iris.
7
cone
 
Photoreceptor cell in the retina that transforms light energy into a nerve impulse.
8
conjunctiva
 
Delicate membrane lining the eyelids and covering the anterior eyeball.
9
cornea
 
Fibrous transparent layer of clear tissue that extends over the anterior portion of the eyeball.
10
fovea centralis
 
Tiny pit or depression in the retina that is the region of clearest vision.
11
fundus of the eye
 
Posterior, inner part of the eye.
12
iris
 
Colored pigmented membrane surrounding the pupil of the eye.
13
lens
 
Transparent, biconvex body behind the pupil of the eye. 
14
macula
 
Yellowish region on the retina laterial to and slightly below the optic disc; contains the...
15
optic chiasm
 
Point at which optic nerve fibers cross in the brain.
16
optic disc
 
Region at the back of the eye where the optic nerve meets the retina.
17
optic nerve
 
Cranial nerve carrying impulses from the retina to the brain (cerebral cortex).
18
pupil
 
Dark opening of the eye, surrounded by the iris, through which light rays pass.
19
refraction
 
Bending of light rays by the cornea, lens and fluids of the eye to bring the rays into focus...
20
retina
 
Light-sensitive nerve cell layer of the eye containing photoreceptor cells (rods and cones).
21
rod
 
Photoreceptor cell of the retina essential for vision in dim light and for peripheral vision.
22
sclera
 
Tough, white outer coat of the eyeball.
23
thalamus
 
Relay center of the brain.  Optic nerve fibers pass through the thalamus on their way...
24
vitreous humor
 
Soft, jelly-like material behind the lens in the vitreous chamber, helps maintain the shape...
25
auditory canal
 
Channel that leads from the pinna to the eardum.
26
auditory meatus
 
Auditory canal.
27
auditory nerve fibers
 
Carry impulses from the inner ear to the brain (cerebral cortex). 
28
auditory tube
 
Channel between the middle ear and the nasopharynx; eustachian tube.
29
auricle
 
Flap of the ear; the protuding part of the external ear, or pinna.
30
cerumen
 
Waxy substance secreted by the external ear; also called ear wax.
31
cochlea
 
Snail-shaped, spirally wound tube in the inner ear, contains hearing-sensitive receptor cells.
32
endolymph
 
Fluid within the labyrinth of the inner ear.
33
eustachian tube
 
Auditory tube.
34
incus
 
Second ossicle (bone) of the middle ear, incus means anvil.
35
labyrinth
 
Maze-like series of canals of the inner ear. 
36
malleus
 
First ossicle of the middle ear, malleus means hammer.
37
organ of Corti
 
Sensitive auditory receptor area found in the cochlea of the inner ear.
38
ossicle
 
Small bone of the ear, includes the malleus, incus and stapes.
39
oval window
 
Membrane between the middle ear and the inner ear.
40
perilymph
 
Fluid contained in the labyrinth of the inner ear.
41
pinna
 
Auricle; flap of the ear.
42
semicircular canals
 
Passages in the inner ear associated with maintaining equilibrium.
43
stapes
 
Third ossicle of the middle ear.
44
tympanic membrane
 
Membrane between the outer and the middle ear, also caled the eardrum.
45
vestibule
 
Central cavity of the labyrinth, connecting the semicircular canals and the cochlea.


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