Sensory physiology Flashcards

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1
Q

chemoreceptors detect

A

chemicals

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2
Q

What are olfactory epithelium receptors

A

detects smell in the nose

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3
Q

what are the jobs of receptors of the aortic and carotid bodies

A

to detect oxygen levels in the arterial blood

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4
Q

What are the jobs of neurons near or in supraoptic nuclei

A

osmolality of body fluids

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5
Q

What are the receptors in or on the surface of the medulla responsible for

A

CO2 concentration detection

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6
Q

What are the receptors in the hypothalamus responsible for

A

blood glucose, amino acids and fatty acid concentrations

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7
Q

thermoreceptors

A

detect change in temperature

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8
Q

nocicceptors

A

pain receptors (free nerve endings) detect physical and chemical damage to tissues

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9
Q

Electromagnetic receptors

A

detect light on the retina of the eye (vision with rods and cones)

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10
Q

Nerve fibers only transmit_______ not _______
the sensation you feel is determined by __________

A

impulses not modalities

determined by the point the NS to which the nerve fiber leads

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11
Q

The labeled line principle

A

the specificity of nerve fibers are only meant for transmitting one modality of sensation! (Ex: pain fibers are only for pain)

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12
Q

Stimuli cause nerve impulses cause receptor potential cause action potential cause excitation of neurons

A

hmmm okay

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13
Q

pacinian corpuscle

A

sensory sites for deep pressure and vibration found mostly on hands and feet

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14
Q

What are the types of receptors that adapt and react very quickly and react strongly WHILE a change is taking place (called rate or phasic receptors)

A

pacinian and hair receptors (within a second)

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15
Q

what receptors work slower and are TONIC receptors that keep brain constantly aware of surroundings.

A

joint capsules and muscle spindles take long but idk how long
carotid and aortic baroreceptors may take 2 days
some chemoreceptors and pain receptors may never adapt completely

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16
Q

type A nerve fiber classification

A

large and medium sized myelinated fibers of spinal nerve (very fast 120m/s)

17
Q

Type C nerve fiber classification

A

unmyelinated fibers that conduct impulses at low velocities (.5m/s)

18
Q

Aching pain is type

A

C

19
Q

cold/warmth is type

A

C

20
Q

SHarp pricking pain is type

A

A alpha

21
Q

sensory 1A

A

annulospiral endings of muscle spindles

22
Q

sensory fibers group 1B

A

golgi tendon organs

23
Q

sensory fibers group 2

A

cutanous tactile from flower spray endings in muscle spindles (posture)

24
Q

sensory fiber group 3

A

temperatyre, pricking pain, touch

25
Q

sensory fibers group 4

A

unmeyelinated fibers carrying pain, itch temperature

26
Q

the neuronal area stimulated by each incoming nerve fiber is

A

stimulatory field