N11 - Sensory (Newton) Flashcards

1
Q

enteroreceptors

A

within body

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1
Q

Rapid adaptors

A

Pacinian

Meissner

Endings around hairs

Free nerve endings –> varies

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1
Q

increase sensitivity of nerve endings

A

prostaglandins

Substance P

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2
Q

Nerve fiber:

sharp pain

cold receptors

hair receptors

visceral receptors

A

ADelta

(5-30 m/sec)

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3
Q

environmental stimulus in whcih each receptor is maximally responseive

A

Adequate stimulus

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4
Q

Efferents to extrafusal muscle fibers

A

alpha

(70-120 m/sec)

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5
Q

Efferents to intrafusal muscle fibers

A

gamma

(10-50 m/sec)

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6
Q

nerve fiber:

most nociceptors

dull, aching

warmth

itch

some touch

some visceral

postganglionic autonoimc efferents

A

C

(0.5-2 m/sec unmyelinated)

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6
Q

Slow adapting

Monitors muscle tension during contraction

A

GTO

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7
Q

merkel cells

A

touch

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7
Q

golgi tendon organs

A

1b

(70-120 m/sec)

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9
Q

meissner

A

discrim. touch

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9
Q

free nerve endings

A

pain

temperature

itch

touch

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10
Q

ruffini ending

A

pressure

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11
Q

Krause end bulb

A

thermal (cold)

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11
Q

muscle spindle primary endings

A

1a

(70-120 m/sec)

12
Q

encapsulated endings

endings with accessory structures

meissner

merkel

muscle spindle secondary endings

A

ABeta

(30-70 m/sec)

14
Q

different energy types

A

sensory modalities

15
Q

bind to bare nerve endings

A

5HT

Histamine

K

ACh

Proteolytic enzymes

17
Q

exteroreceptors

A

external environment

19
Q

proprioreceptors

A

body position

joint movement

muscle tone

21
Q

slow adaptors

A

Merkel

Ruffini

Krause

Free nerve endings –> varies

22
Q

endings around hairs

A

touch

23
Q

Encode brail

A

Merkel & Meissner

24
Q

Cause itch, flare, & edema

A

glutamate

neuropeptides

  • both from free nerve endings
25
Q

Preganglionic autonomic efferents

A

B fiber

(3-15 m/sec)

27
Q

gamma-efferent nn.

A

contraction of intrafusal mm.

28
Q

pacinian

A

vibration