5. Sensory Organs Flashcards

1
Q

Somatosensory system

A

Specialized receptor cells primarily in the skin that respond to tactile stimuli sending to the parietal lobe.

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2
Q

Palperbr-

A

Pertaining to the eyelid

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3
Q

Blank

A

Blank

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4
Q

Phac-

A

Pertaining to the lens of the eye

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5
Q

Scot-

A

Pertains to Darkness

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6
Q

Ametropia

A

Eye refractive power defect

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7
Q

Chalazion

A

Granuloma around a sebaceous gland on the eyelid

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8
Q

Cycloplegia

A

Paralysis of the ciliary muscle

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9
Q

Dacryocystitis

A

Inflammation and obstruction of the nasolacrimal duct

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10
Q

Dacryostenosis

A

Narrowing of the lacrimal duct

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11
Q

Ectropian

A

Outward eyelid eversion

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12
Q

Entropian

A

Eyelid inward inversion

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13
Q

Enucleation

A

Removal of an organ from a body cavity

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14
Q

Episclera

A

Connective tissue covering of the sclera

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15
Q

Exenteration

A

Radical excision; removal of an organ in one-piece

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16
Q

Esophthalmos

A

Anterior protrusion of the eyeball out of the orbit

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17
Q

Hordeolum

A

Infection of eyelash root on the eyelid; stye

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18
Q

Nystagmus

A

Rapid, involuntary eye movements, Indicates brain tumor, inner ear condition or adverse reaction to medication

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19
Q

Papilledema

A

Swelling of the optic disk

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20
Q

Ptosis

A

Drooping of the upper eyelid

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21
Q

Tarsorrhaphy

A

Suturing of eyelids together

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22
Q

Tonometer

A

Instrument measuring intraocular pressure

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23
Q

Trichiasis

A

Ingrown eyelashes

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24
Q

Uveal

A

Vascular tissue of choroid, ciliary body and iris

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25
Q

Xanthelasma

A

Lipid disorder; yellow plaque on the eyelid

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26
Q

Open angle galucoma

A

The trabecular mesh work does not drain adequately. It is chronic, with slower onset.

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27
Q

Closed Angle Glaucoma

A

Iris is squeezed against the cornea, block the drainage of aqueous humor. Acute, painful.

28
Q

Drugs used to treat glaucoma

A

Pilocarpine, prostaglandines, beta blockers

29
Q

Phacoemulsification

A

Common cataract treatment, ultrasonic device used to break up the old lens.

30
Q

Extracapsular Cataract Surgery

A

Incision allows for the entire lens to be removed in on piece. The posterior half of the lens’ out covering is left in place

31
Q

Intracapsular Cataract Survery

A

Rarely performed; Entire lens and capsule are removed through one large incision.

32
Q

Macular Degeneration

A

Destruction of the Fovea Centralis of the Macula; central field of vision is lost.

33
Q

Wet macular degeneration

A

blood or fluid leaks into the macula. Photocoagulation therapy is used to to seal the blood vessels.

34
Q

Dry macular degeneration

A

Atrophy and deterioration of the macula; no known treatment

35
Q

Pneumatic Retinopexy

A

Treats medium to large retinal tears. Surgeon uses a gas bubble and freezing device to seal the retina to the choroid.

36
Q

Salping-

A

Eustachian tube

37
Q

Apicectomy

A

Excision of portion of temporal bone

38
Q

Aural Tresia

A

Congenital absence of external auditory canal

39
Q

Cerumen

A

Earwax

40
Q

Cholesteatoma

A

Abnormal, noncancerous grown that forms in the middle ear

41
Q

Exostosis

A

Bony overgrowth in the ear canal

42
Q

Macrotia

A

Condition of having abnormally large ears

43
Q

Ossicles

A

Bones of the middle ear (malleus, incus, stapes)

44
Q

Otophyorrhea

A

Pus drainage from the ear

45
Q

Stapedectomy

A

Replacement of the steps with a prosthesis

46
Q

Tympanolysis

A

Removal of tympanic membrane adhesions

47
Q

Tympanostomy Tube Placement

A

Relieve fluid buildup around the tympanic membrane

48
Q

Organ of Corti

A

Housed in the cochlea; transduce mechanical sound vibrations into electrical impulses to the temporal lobe

49
Q

Vestibular system contains …

A

Cochlea, labyrinth of the inner ear and the semicircular canals

50
Q

Conductive hearing loss

A

Defect in sound conducting apparatus: scar tissue, otitis media or otoslerosis

51
Q

Sensorineual hearing lost

A

Lesion on the cochlea or central neural pathway

52
Q

Ototoxic hearing loss

A

Ingesting toxins that damage the inner ear

53
Q

Meniere’s Disease

A

Also known as idiopathic endolymphatic hydrops; disturbance of the inner ear due to increased hydraulic pressure.

54
Q

Nociception

A

Perception of pain

55
Q

Hyperalgesia

A

Abnormally heightened sensitivity to pain

56
Q

Hyposthesia

A

Numbness

57
Q

Anosmia

A

Loss of smell

58
Q

Dysosmia

A

Distortion of smells

59
Q

Parosmia

A

All substances smell bad

60
Q

Phantosmia

A

Smelling things that aren’t there

61
Q

-geusia

A

Taste

62
Q

Ageusia

A

Lack of sense of taste

63
Q

Dysgeusia

A

Distorted sense of taste

64
Q

Hyogeusia

A

Decreased sense of taste

65
Q

Vallate papillae

A

located at the back of the tongue with 50% o f the tastebuds

66
Q

Foliate Papillae

A

On the sides of the tongue’s posterior with several hundred tastebuds

67
Q

Filiform papillae

A

have mechanoreceptors, but no tastebuds