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Anatomy And Phisyology 211 > Taste and smell > Flashcards

Taste and smell Flashcards

1
Q

Modality

A

Electromagnetic radiation…

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2
Q

Intensity of steimulus.

A

Higher rate of action potentials
Multiple neurons
Various sensitivity

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3
Q

Duration of stimulus

A

Sensory adaption

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4
Q

Phasic receptors (fast receptors)

A 
Provided information on onset and/or intensity of stimulation, followed by adaption. 
Ex.
Thermoreceptors
Tactile
Taste 
Smell
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5
Q

Tonic receptors (slow adapting)

A 
Little (or NO) adaptation
EX. 
Pain
Muscle spindles
Joint proprioceptors
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6
Q

Receptor types

A

Modality

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7
Q

Modality

A 
Thermoreceptors
     Cold
     Warm
Photoreceptors
Nociceptors, pain related 
Chemoreceptors, taste and smell. 
Mechanoreceptors
Osmoreceptors
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8
Q

Stimulus origin

A

Exteroeptors, external
Interoreceptors, internal
Proprioceptors, changes in the stretching of our muscles

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9
Q

Receptor distribution

A

General, soma…

Special

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10
Q

General senses

A

Pain

Temp.

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11
Q

First order neurons

A

Sensory location

Spinal cord, gray horns

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12
Q

Second order neurons

A

Gray horn to the thalamus

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13
Q

Third order neurons

A

Thalamus to sensory cortex

CNS interneuron to CNS interneuron

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14
Q

Taste, gustation

A

Taste buds: epithelium, taste receptors. Neuroepithelium
Fungiform papillae
Circumvallate papillae
What we can taste:
Sweet, salty, sour, bitter, umami: savory ex. Parmesan cheese

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15
Q

Sour taste

A

Sour H+ passes through leak ion channels

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16
Q

Salt taste

A

Na+ passes through leak ion channels

17
Q

Other taste

A

Picked up by olfactory system

18
Q

Neural taste sensory pathways

A 
VII facial nerve
IX glossopharyngeal
X Vagus
V trigeminal, sensitive to capsaicin 
Info goes to medulla->thalamus->gustatory cortex
19
Q

Olfaction, smell

A 
Olfactory receptors
Epithelium
Modified neurons:
10-20 million 
2-4K types

Anatomy And Phisyology 211 (13 decks)

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