Chapter 9 Receptors

Question 1

Meissner’s Corpuscles

Answer 1

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

Question 2

Merkel’s Discks

Answer 2

type of mechanoreceptor

Question 3

Pacinian Corpuscles

Answer 3

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

Question 4

Ruffini’s Endings

Answer 4

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

Question 5

Krause End Bulbs

Answer 5

type of pressure receptor; cutaneous receptors

Question 6

Proprioreceptors

Answer 6

sense of position

Question 7

Taste Buds

Answer 7

line walls of the papillae

Question 8

Olfactory cells

Answer 8

superior to nasal cavity; for smelling

Question 9

Sty

Answer 9

Inflammation in one of the eye sebaceous gland

Question 10

Conjunctiva

Answer 10

Prevents tears into orbits

Question 11

Myasthenia Gravis

Answer 11

a muscle weakness due to an inability to respond to acetychloine

Question 12

Lacrimal Apparatus

Answer 12

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

Question 13

Sclera

Answer 13

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

Question 14

Cornea

Answer 14

window of the eye

Question 15

Choroid

Answer 15

midle, thin dark brown layer, absorbs stray light rays

Question 16

Ciliary Muscle

Answer 16

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

Question 17

Iris

Answer 17

regulates size of pupil when choroid contracts or retracts

Question 18

Pupil

Answer 18

where light enters

Question 19

Lens

Answer 19

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

Question 20

Vitreous Humor

Answer 20

fills posterior cavity behind lens, a gelatinous material

Question 21

Aqueous Humor

Answer 21

fills anterior cavity between cornea and the lens

Question 22

Glaucoma

Answer 22

when the drainage ducts are blocked and aqueous humor builds up

Question 23

retina

Answer 23

has 3 layers of cells

Question 24

rods

Answer 24

for black and white vision (located in fovea centrailis)

Question 25

cones

Answer 25

for color vision (located in fovea centrailis)

Question 26

optic nerve

Answer 26

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

Question 27

blind spot

Answer 27

where vision is impossible known as optic disk

Question 28

Macula lutea

Answer 28

contained in the retina

Question 29

Fovea centrailis

Answer 29

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

Question 30

Rhodopsin

Answer 30

molecule that contains the protein opsin and the pigment retinal

Question 31

color blindness

Answer 31

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

Question 32

stereoscopic vision

Answer 32

data pooled by both eyes

Question 33

accomidation

Answer 33

lens rounds up when we view close objects

Question 34

cataract

Answer 34

occurs when lens becomes opaque/proteins oxidize

Question 35

pinna

Answer 35

inside external ear which collects sound waves

Question 36

auditory canal

Answer 36

filters air

Question 37

ceruminous glands

Answer 37

in the upper wall of the ear, secretes earwax

Question 38

tympanic membrane

Answer 38

eardrum

Question 39

oval and round window

Answer 39

small openings in the middle ear

Question 40

eustachian tubes

Answer 40

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

Question 41

otitis media

Answer 41

infections of the middle ear

Question 42

myringotomy

Answer 42

incision of eardrum followed by tiny tube inserted

Question 43

semicircular canals

Answer 43

helps maintain balance (dynamic equilibrium)

Question 44

ampulla

Answer 44

the base of each canal

Question 45

vastibule

Answer 45

a chamber that lies between semicircular canals and cochlea

Question 46

utricle

Answer 46

a sac inside the vestibule

Question 47

otoliths

Answer 47

calcium carbonate granules rest on this gelatinous material

Question 48

cochlea

Answer 48

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

Question 49

organ of corti

Answer 49

sends nerve impulses to brain where they are interpreted as sound

Question 50

dynamic equilibrium

Answer 50

requires a knowledge of angular and/or rotational movement

Question 51

static equilibrium

Answer 51

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

Question 52

prebycusis

Answer 52

age-related hearing loss

Question 53

where chemoreceptors are found

Answer 53

`nose and mouth

Question 54

where photoreceptors are found

Answer 54

eyes

Question 55

where receptors for touch found

Answer 55

merkel's disk

Question 56

colored part of eye

Answer 56

iris

Question 57

where are receptors for hearing and balance found

Answer 57

inner ear

Question 58

order of what ossicles vibrate in sequence

Answer 58

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

Question 59

3 eye disorders

Answer 59

glaucoma, cataracts, macular degeneration

Question 60

where is the cochlea found

Answer 60

inner ear

Question 61

location of bitter taste

Answer 61

back

Question 62

location of sweet taste

Answer 62

front

Question 63

location of salty taste

Answer 63

sides

Question 64

location of sour taste

Answer 64

front and sides

Question 65

eyelid

Answer 65

conjunctiva lines its inner surface

Question 66

inferior oblique

Answer 66

rotates eye clockwise

Question 67

lacrimal gland

Answer 67

secretes tears

Question 68

lacrimal sac

Answer 68

drains tear into nose

Question 69

lateral rectus

Answer 69

turn eye outward

Question 70

medial rectus

Answer 70

turns eye inward

Question 71

orbit

Answer 71

consists of seven skull bones

Question 72

superior rectus

Answer 72

rolls eye upward

Question 73

order of which light passes through structures of brain

Answer 73

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

Question 74

auditory tube

Answer 74

extends from middle ear to nasopharynx

Question 75

cochlea

Answer 75

contains receptors for hearing

Question 76

incus

Answer 76

middle ear bone

Question 77

pinna

Answer 77

external ear flap

Question 78

round window

Answer 78

opening covered with a membrane

Question 79

semicircular canals

Answer 79

contribute to the sense of dynamic equilibrium

Question 80

order of signal transmission

Answer 80

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

Question 81

what composes organ of corti

Answer 81

cochlea