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Bio 40B > Special Senses pt.1 > Flashcards

Special Senses pt.1 Flashcards

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Biology 101 flashcards
1
Q

receptors for special senses are housed where

A

complex sensory organs

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2
Q

name the chemical senses

A

olfactory (smell), gustatory (taste)

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3
Q

olfactory pathway

A

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

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4
Q

olfactory receptors

A

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

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5
Q

where are bipolar neurons found

A

in nasal epithelium in the superior portion of nasal cavity

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6
Q

what are the first order neurons in the olfactory pathway

A

bipolar neurons

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7
Q

what are the parts that respond to olfactory stimulus

A

olfactory hairs

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8
Q

what are supporting cells

A

epithelial cells of the mucous membrane that line the nose

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9
Q

what are supporting cells responsible for

A

physical support, nourishment and electrical insulation

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10
Q

what are basal stem cells responsible for

A

they undergo mitosis to replace olfactory receptor cells

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11
Q

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

A

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

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12
Q

the olfactory epithelium extends from where

A

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

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13
Q

adaption of odors; threshold of smell

A

quick; low

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14
Q

taste stimuli classes

A

sour, umami, bitter, salty, sweet

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15
Q

where are gustatory receptor cells found

A

taste buds

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16
Q

where are taste buds found

A

tongue, soft palate, pharynx, epiglottis

17
Q

taste buds’ 3 kinds of epithelial cells

A

supporting cells, gustatory receptor cells, and basal stem cells

18
Q

where are taste buds found

A

margins of papillae

19
Q

3 types of papillae

A

circumvallate, fungiform, and foliate papillae

20
Q

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

A

filiform papilae

21
Q

receptors in nasal mucosa send impulses along branches of what nerve

A

CN I

22
Q

impulse of olfactory recepters travels through

A

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

23
Q

binding of odorant molecule to an olfactory receptor protein

A

olfactory transduction

24
Q

chemical reactions involving cyclic AMP (cAMP) causes

A

depolarization

25
Q

impulse travels to the _____ for odor identification

A

frontal lobe (orbitofrontal area)

26
Q

what 3 cranial nerves are involved in sense of taste

A

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

27
Q

facial (VII) nerve carries taste info from

A

anterior 2/3 of tongue

28
Q

glossopharyngeal (IX) nerve carries taste info from

A

posterior 1/3 of the tongue

29
Q

vagus (x) nerve carries taste info from

A

taste buds on the epiglottis and in the throat

30
Q

adaptation for taste, threshold for taste

A

quick; varies

31
Q

what taste class has the lowest? next?

A

bitter; sour

32
Q

gustatory pathway

A

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

33
Q

cells that provide physical support, nourishment and electrical insulation

A

supporting cells

34
Q

cells that undergo mitosis to replace olfactory receptor cells

A

basal stem cells

35
Q

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

A

olfactory glands (Bowman’s glands)

36
Q

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

A

olfactory epithelium

Bio 40B (25 decks)

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