The Sense : Key Terms Flashcards

(72 cards)

1
Q

gustation

A

the sense of tatse

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2
Q

hearing

A

the sense of perception of sounds

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3
Q

olfaction

A

the sense of smell

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4
Q

proprioception

A

the awareness of posture, movement, and changes in equilibrium; receptors are located in the muscles, tendons, and joints

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5
Q

sensory receptor

A

a sensory nerve ending or a specialized structure associated with a sensory nerve that responds to a stimulus

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6
Q

tactile

A

pertaining to the sense of touch

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7
Q

vision

A

the sense by which the shape, size and color of objects are perceived by means of the light they give off

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8
Q

equlibrium

A

the sense of balance

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9
Q

auditory tube

A

the tube that connects the middle ear with the nasopharynx and serves to equalize pressure between the outer ear and middle ear; pharyngotympanic tube; originally called the eustachian tube

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10
Q

cerumen

A

the brownish, wax-like secretion formed in the external ear canal to protect the ear and prevent infection

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11
Q

cochlea

A

the coiled portion of the inner ear that contains the receptors from hearing

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12
Q

external auditory canal

A

tube that extends from the pinna of the ear to the tympanic membrane; external auditory meatus

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13
Q

incus

A

the middle ossicle of the ear

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14
Q

labyrinth

A

the inner ear, names for its complex structure, which resembles a maze

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15
Q

malleus

A

the ossicle of the middle ear that is in connect with the tympanic membrane and the incus

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16
Q

ossicles

A

the small bones of the middle ear, the malleus, incus, and stapes

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17
Q

pinna

A

the projecting part of the outer ear; auricle

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18
Q

semicircular canals

A

the 3 curved channels of the inner ear that hold the receptors for equilibrium

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19
Q

spiral organ

A

the hearing receptor which is located in the cochlea of the inner ear; organ of Corti

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20
Q

stapes

A

the ossicle that is in contact with the inner ear

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21
Q

tympanic membrane

A

the membrane between the external auditory canal and middle ear; the eardrum. It serves to transmit sound waves to the ossicles of the middle ear

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22
Q

vestibular apparatus

A

the portion of the inner ear that is concerned with the sense of equilibrium; consists of the vestibule and semicircular canals

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23
Q

vestibule

A

the chamber in the inner ear that holds some of the receptors for equilibrium

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24
Q

vestibulocochlear nerve

A

the nerve that transmits impulses for hearing and equilibrium from the ear to the brain; eight cranial nerve, auditory or acoustic nerve

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25
acoustic neuroma
a tumor of the 8th cranial nerve sheath; although benign, it can press on surrounding tissue and produce symptoms; aka acoustic or vestibular schwannoma or acoustic neurilemmoma
26
conductive hearing loss
hearing impairment that results from blockage of sound transmission to the inner ear
27
Mineiere disease
a disease associated with with increased fluid pressure in the inner ear and characterized by hearing loss, vertigo, and tinnitus
28
otitis externa
inflammation of the external auditory canal; swimmer's ear
29
otitis media
inflammation of the middle ear with accumulation of serous (watery) or mucoid fluid
30
otosclerosis
formation of abnormal or sometimes hardened bony tissue in the ear. It usually occurs the oval window and the footplate (base) of the stapes, causing immobilization of the stapes and progressive hearing loss
31
sensorineural hearing loss
hearing impairment that results from damage to the inner ear, eight cranial nerve, or auditory pathways in the brain
32
tinnitus
a sensation of noise , such a ringing , in the ear
33
vertigo
an illusion of movement , as of the body moving in space or the environment moving about the body; usually caused by disturbances in the vestibular apparatus.
34
myringotomy
surgical incision of the tympanic membrane; performed to drain the middle ear cavity or to insert a tube into the TM for drainage
35
stapedectomy
surgical removal of the stapes; it may be combined with insertion of a prosthesis to correct otosclerosis
36
accommodation
adjustment of the lens's curvature to allow for vision at various distances
37
aqueous humor
fluid that fills the eye anterior to the lens
38
choroid
the dark, vascular, middle layer of the eye; part of the uvea
39
ciliary body
the muscular portion of the uvea that surrounds the lens and adjusts its shape for near and far vision
40
cone
a specialized cell in the retina that responds to light; cone have high visual acuity, functions in bright light, and respond to colors
41
conjunctiva
the mucous membrane that lines the eyelids and covers the eyeball's anterior surface
42
convergence
coordinated movement of the eyes toward fixation on the same point
43
cornea
the clear, anterior portion of the sclera
44
fovea
the tiny depression in the retina that is the point of sharpest vision
45
iris
the muscular colored ring between the lens and the cornea; regulates the amount of light that enters the eye by altering the size of the pupil at its center
46
lacrimal glands
pertaining to tears
47
lens
the transparent, biconvex structure in the anterior portion of the eye that refracts light and functions in accommodation
48
macula
a small spot or colored area; used alone to mean the yellowish spot in the retina that contains the fovea
49
optic disk
the point where the optic nerve joins the retina; at this point there are no rods or cones; also called the blind spot or optic papilla
50
orbit
the bony cavity that contains the eyeball
51
palpebra
an eyelid; a protective fold (upper or lower) that closes over the anterior surface of the eye
52
pupil
the opening at the center of the iris
53
refraction
the bending of light rays as they pass through the eye to focus to focus on a specific point on the retina; also the determination and correction of ocular refractive errors
54
retina
the innermost light-sensitive layer of the eye; contains the rods and cones, the specialized receptor cells for vision
55
rod
a specialized cell in the retina that responds to light; rods have low visual acuity, function in dim light, and do not respond to color
56
sclera
the tough white fibrous outermost layer of the eye; the white of the eye
57
uvea
the middle, vascular layer of the eye; consists of the choroid; ciliary body, and iris
58
visual acuity
sharpness of vision
59
vitreous body
the transparent jelly-like mass that fills the eyeball's main cavity; aka vitreous humor
60
AMD
Age related macular degeneration: deterioration of the macula associated with aging; impairs central vision
61
astigmatism
an error of refraction caused by irregularity in the curvature of the cornea or lens
62
cataract
opacity of the lens of the eye
63
conjunctivitis
inflammation of the conjunctiva; pink eye
64
diabetic retinopathy
degenerative changes in the retina associated with DM
65
glaucoma
an eye disease caused by increased intraocular pressure that damages the optic disk and causes vision loss. Usually results from faulty fluid drainage from the anterior eye
66
myopia
a refractive error in which light rays focus in front of the retina and objects can be seen clearly only when very close to the eye; nearsightedness
67
hyperopia
a refractive error in which light rays focus behind the retina and objects can be seen clearly only when far away from the eye; farsightedness; aka hypermetropia
68
opthalmia neonatorum
severe conjunctivitis usually caused by infection with gonococcus during birth
69
phacoemulsification
removal of a cataract by ultrasonic destruction and extraction of the lens
70
presbyopia
changes in the eye that occur with age; the lens loses elasticity and the ability to accommodate for near vision
71
retinal detachment
separation of the retina from its underlying layer
72
trachoma
an infection caused by Chlamydia trachomatis leading to inflammation and scarring of the cornea and conjunctiva; a common cause of blindness in underdeveloped countries