Special Senses pt.1

Question 1

receptors for special senses are housed where

Answer 1

complex sensory organs

Question 2

name the chemical senses

Answer 2

olfactory (smell), gustatory (taste)

Question 3

olfactory pathway

Answer 3

olfactory receptors convey nerve impulses to olfactory nerves, olfactory bulbs, olfactory tracts, and the cerebral cortex and limbic system

Question 4

olfactory receptors

Answer 4

bipolar neurons, supporting cells, basal stem cells, olfactory glands

Question 5

where are bipolar neurons found

Answer 5

in nasal epithelium in the superior portion of nasal cavity

Question 6

what are the first order neurons in the olfactory pathway

Answer 6

bipolar neurons

Question 7

what are the parts that respond to olfactory stimulus

Answer 7

olfactory hairs

Question 8

what are supporting cells

Answer 8

epithelial cells of the mucous membrane that line the nose

Question 9

what are supporting cells responsible for

Answer 9

physical support, nourishment and electrical insulation

Question 10

what are basal stem cells responsible for

Answer 10

they undergo mitosis to replace olfactory receptor cells

Question 11

what are olfactory glands (Bowman’s glands) responsible for

Answer 11

produce mucus that is used to dissolve odor molecules so that transduction may occur

Question 12

the olfactory epithelium extends from where

Answer 12

covers inferior surface of the cribiform plate and extends along the superior nasal conchae

Question 13

adaption of odors; threshold of smell

Answer 13

quick; low

Question 14

taste stimuli classes

Answer 14

sour, umami, bitter, salty, sweet

Question 15

where are gustatory receptor cells found

Answer 15

taste buds

Question 16

where are taste buds found

Answer 16

tongue, soft palate, pharynx, epiglottis

Question 17

taste buds’ 3 kinds of epithelial cells

Answer 17

supporting cells, gustatory receptor cells, and basal stem cells

Question 18

where are taste buds found

Answer 18

margins of papillae

Question 19

3 types of papillae

Answer 19

circumvallate, fungiform, and foliate papillae

Question 20

what papila covers the tongue but act as tactile receptors instead of taste receptors

Answer 20

filiform papilae

Question 21

receptors in nasal mucosa send impulses along branches of what nerve

Answer 21

CN I

Question 22

impulse of olfactory recepters travels through

Answer 22

cribiform plate, synapse w olfactory bulb, impulses travel along olfactory tract, and interpretation in the primary olfactory area in the cerebral cortex (temporal lobe)

Question 23

binding of odorant molecule to an olfactory receptor protein

Answer 23

olfactory transduction

Question 24

chemical reactions involving cyclic AMP (cAMP) causes

Answer 24

depolarization

Question 25

impulse travels to the _____ for odor identification

Answer 25

frontal lobe (orbitofrontal area)

Question 26

what 3 cranial nerves are involved in sense of taste

Answer 26

VII (Facial), IX (glossopharyngeal), X (Vagus)

Question 27

facial (VII) nerve carries taste info from

Answer 27

anterior 2/3 of tongue

Question 28

glossopharyngeal (IX) nerve carries taste info from

Answer 28

posterior 1/3 of the tongue

Question 29

vagus (x) nerve carries taste info from

Answer 29

taste buds on the epiglottis and in the throat

Question 30

adaptation for taste, threshold for taste

Answer 30

quick; varies

Question 31

what taste class has the lowest? next?

Answer 31

bitter; sour

Question 32

gustatory pathway

Answer 32

gustatory receptor cells convey nerve impulses to CN VII, IX, X, the medulla, the thalamus, and parietal lobe of the cerebral cortex

Question 33

cells that provide physical support, nourishment and electrical insulation

Answer 33

supporting cells

Question 34

cells that undergo mitosis to replace olfactory receptor cells

Answer 34

basal stem cells

Question 35

glands that produce mucus that is used to dissolve odor molecules so that transduction may occur

Answer 35

olfactory glands (Bowman's glands)

Question 36

covers inferior surface of the cribiform plate and extends along the superior nasal concha

Answer 36

olfactory epithelium