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Physiology Chapter 9 > Chapter 9 Receptors > Flashcards

Chapter 9 Receptors Flashcards

1
Q

Meissner’s Corpuscles

A

concentrated in the finger tips, palms, tongue, nipples, penis, and clitoris

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2
Q

Merkel’s Discks

A

type of mechanoreceptor

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3
Q

Pacinian Corpuscles

A

type of pressure receptor; onion-shaped sense organsin the dermis

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4
Q

Ruffini’s Endings

A

another type of pressure receptor encapsulated by sheaths of connective tissue contain lacy networks of nerve fibers

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5
Q

Krause End Bulbs

A

type of pressure receptor; cutaneous receptors

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6
Q

Proprioreceptors

A

sense of position

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7
Q

Taste Buds

A

line walls of the papillae

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8
Q

Olfactory cells

A

superior to nasal cavity; for smelling

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9
Q

Sty

A

Inflammation in one of the eye sebaceous gland

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10
Q

Conjunctiva

A

Prevents tears into orbits

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11
Q

Myasthenia Gravis

A

a muscle weakness due to an inability to respond to acetychloine

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12
Q

Lacrimal Apparatus

A

Consists of lacrimal gland and the lacrimal sac with it’s ducts

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13
Q

Sclera

A

the outer sclera is white, fibrous layer except for the transparent cornea

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14
Q

Cornea

A

window of the eye

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15
Q

Choroid

A

midle, thin dark brown layer, absorbs stray light rays

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16
Q

Ciliary Muscle

A

Choroid thickens and forms the ring-shaped ciliary body which controls shape of lens for near and far vision

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17
Q

Iris

A

regulates size of pupil when choroid contracts or retracts

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18
Q

Pupil

A

where light enters

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19
Q

Lens

A

attached to ciliary body by ligaments which divides the cavity of eye into two separate smaller cavities

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20
Q

Vitreous Humor

A

fills posterior cavity behind lens, a gelatinous material

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21
Q

Aqueous Humor

A

fills anterior cavity between cornea and the lens

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22
Q

Glaucoma

A

when the drainage ducts are blocked and aqueous humor builds up

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23
Q

retina

A

has 3 layers of cells

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24
Q

rods

A

for black and white vision (located in fovea centrailis)

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25
Q

cones

A

for color vision (located in fovea centrailis)

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26
Q

optic nerve

A

inside innermost layer is the ganglionic cells whose fibers make it up

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27
Q

blind spot

A

where vision is impossible known as optic disk

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28
Q

Macula lutea

A

contained in the retina

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29
Q

Fovea centrailis

A

where vision is most acute because of great concentration of cone cells

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30
Q

Rhodopsin

A

molecule that contains the protein opsin and the pigment retinal

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31
Q

color blindness

A

extremely rare where a particular type of cone is lacking or deficient in number

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32
Q

stereoscopic vision

A

data pooled by both eyes

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33
Q

accomidation

A

lens rounds up when we view close objects

34
Q

cataract

A

occurs when lens becomes opaque/proteins oxidize

35
Q

pinna

A

inside external ear which collects sound waves

36
Q

auditory canal

A

filters air

37
Q

ceruminous glands

A

in the upper wall of the ear, secretes earwax

38
Q

tympanic membrane

A

eardrum

39
Q

oval and round window

A

small openings in the middle ear

40
Q

eustachian tubes

A

(auditory tubes) extends from the middle ear to nasophyrnx and permits equalization of air pressure

41
Q

otitis media

A

infections of the middle ear

42
Q

myringotomy

A

incision of eardrum followed by tiny tube inserted

43
Q

semicircular canals

A

helps maintain balance (dynamic equilibrium)

44
Q

ampulla

A

the base of each canal

45
Q

vastibule

A

a chamber that lies between semicircular canals and cochlea

46
Q

utricle

A

a sac inside the vestibule

47
Q

otoliths

A

calcium carbonate granules rest on this gelatinous material

48
Q

cochlea

A

transmits pressure waves that cause the organ of corti to generate nerve impulses to brain resulting in hearing

49
Q

organ of corti

A

sends nerve impulses to brain where they are interpreted as sound

50
Q

dynamic equilibrium

A

requires a knowledge of angular and/or rotational movement

51
Q

static equilibrium

A

requires a knowledge of movement in one place either vertical or horizontal

52
Q

prebycusis

A

age-related hearing loss

53
Q

where chemoreceptors are found

A

`nose and mouth

54
Q

where photoreceptors are found

A

eyes

55
Q

where receptors for touch found

A

merkel’s disk

56
Q

colored part of eye

A

iris

57
Q

where are receptors for hearing and balance found

A

inner ear

58
Q

order of what ossicles vibrate in sequence

A

mallus(hammer), incus(anvil), stapes(stirrup)

59
Q

3 eye disorders

A

glaucoma, cataracts, macular degeneration

60
Q

where is the cochlea found

A

inner ear

61
Q

location of bitter taste

A

back

62
Q

location of sweet taste

A

front

63
Q

location of salty taste

A

sides

64
Q

location of sour taste

A

front and sides

65
Q

eyelid

A

conjunctiva lines its inner surface

66
Q

inferior oblique

A

rotates eye clockwise

67
Q

lacrimal gland

A

secretes tears

68
Q

lacrimal sac

A

drains tear into nose

69
Q

lateral rectus

A

turn eye outward

70
Q

medial rectus

A

turns eye inward

71
Q

orbit

A

consists of seven skull bones

72
Q

superior rectus

A

rolls eye upward

73
Q

order of which light passes through structures of brain

A

1 cornea, 2 aqueous humor, 3 lens, 4 vitreous humor, 5 retina

74
Q

auditory tube

A

extends from middle ear to nasopharynx

75
Q

cochlea

A

contains receptors for hearing

76
Q

incus

A

middle ear bone

77
Q

pinna

A

external ear flap

78
Q

round window

A

opening covered with a membrane

79
Q

semicircular canals

A

contribute to the sense of dynamic equilibrium

80
Q

order of signal transmission

A

1 pinna, 2 external auditory canal, 3 tympanic membrane, 4 malleus, 5 incus, 6 stapes, 7 oval window, 8 organ of corti in cochlea

81
Q

what composes organ of corti

A

cochlea

Physiology Chapter 9 (1 decks)

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