Sensory System: Key Terms

Question 0

Medical term for earwax

Answer 0

cerumen

Question 1

An outward turning of the eyelid

Answer 1

ectropion

Question 2

Inversion of the eyelid margin

Answer 2

entropion

Question 3

Abnormal protrusion of the eyeball

Answer 3

exophthalmos

Question 4

An inflammation of the cornea

Answer 4

keratitis

Question 5

Involuntary, rapid rhythmic movement of the eyeball

Answer 5

nystagmus

Question 6

An inflammation of the ear with purulent discharge

Answer 6

otorrhea

Question 7

Difficulty tolerating light

Answer 7

photophobia

Question 8

Impairment of hearing in old age

Answer 8

presbycusis

Question 9

Farsightedness that occurs normally with aging

Answer 9

presbyopia

Question 10

The dropping of an organ below its usual position, for example, lowering of the eyelid so that it partially or completely covers the cornea

Answer 10

ptosis

Question 11

The determination of refractive errors (inability to focus light rays on the retina) and their correction with eyeglasses

Answer 11

refraction

Question 12

Impaired perception of sound caused by a dysfunction in the inner ear of the eighth cranial nerve

Answer 12

sensorineural hearing loss

Question 13

A planar xanthoma involving the eyelid(s)

Answer 13

xanthelasma

Question 14

Process by which a clear visual IMAGE IS MAINTAINED as the gaze is shifted from a distant to a near point

Answer 14

accommodation

Question 15

Condition that results from an uneven curvature of the cornea or lens in which light rays do not focus on a single point on the retina

Answer 15

astigmatism

Question 16

An opacity of the lens that distorts the image projected onto the retina and that can progress to blindness

Answer 16

cataract

Question 17

Paralysis of the ciliary muscles by medications that block muscarinic receptors; causes blurred vision because shape of the lens can no longer be adjusted to near vision

Answer 17

cycloplegia

Question 18

Increased intraocular pressure as a result of inadequate drainage of aqueous humor from the canal of Schlemm or overproduction of aqueous humor; the condition damages the optic nerve and can result in blindness

Answer 18

glaucoma

Question 19

The best visual acuity with corrective lenses in the better eye of 20/200 or less, or the visual field is no greater that 20 degrees in its widest diameter in the better eye

Answer 19

legally blind

Question 20

A blurred central vision caused by progressive degeneration of the center of the retina; condition may be atrophic or age related, or dry or exudative (wet)

Answer 20

macular degeneration

Question 21

Constriction of the pupil, which occurs primarily by stimulation of the muscarinic receptors of the sphincter muscles. Seen with the use of pilocarpine drops (treating glaucoma), when using opiods, or brain damage of the pons

Answer 21

miosis

Question 22

Constricting the pupil; a medication that causes constriction of the pupil

Answer 22

miotics

Question 23

A dilated pupil that occurs because of *blockage of the muscarinic receptors of the sphincter muscles or by *stimulation of the (x)receptors of the dilator muscles

Answer 23

mydriasis

Question 24

Enlarged pupils occur with (4):

Answer 24

1. Stimulation of the sympathetic nervous system
2. Use of dilating drops
3. Acute glaucoma
4. Past or recent trauma

Question 25

Dilating the pupil; a medication that dilates the pupil

Answer 25

mydriatic

Question 26

Gradual nerve degeneration associated with aging; a common cause of sensorineural hearing loss

Answer 26

presbycusis

Question 27

Mechanical dysfunction or blockage of sound waves in the inner ear fibers because of external ear or middle ear disorders.

Answer 27

conductive hearing loss

Question 28

Conductive hearing loss: Blockage can be caused by IMPACTED (4) in the middle ear

Answer 28

1. Cerumen
2. Foreign bodies
3. Pus
4. Serum
   (disorders can be corrected with no damage to hearing of minimal permanent hearing loss)