N11 - Sensory (Newton) Flashcards Preview

4.1 > N11 - Sensory (Newton) > Flashcards

Flashcards in N11 - Sensory (Newton) Deck (28):
1

enteroreceptors

within body

1

Rapid adaptors

Pacinian

Meissner

Endings around hairs

Free nerve endings --> varies

1

increase sensitivity of nerve endings

prostaglandins

Substance P

2

Nerve fiber:

sharp pain

cold receptors

hair receptors

visceral receptors

ADelta

(5-30 m/sec)

3

environmental stimulus in whcih each receptor is maximally responseive

Adequate stimulus

4

Efferents to extrafusal muscle fibers

alpha

(70-120 m/sec)

5

Efferents to intrafusal muscle fibers

gamma

(10-50 m/sec)

6

nerve fiber:

most nociceptors

dull, aching

warmth

itch

some touch

some visceral

postganglionic autonoimc efferents

C

(0.5-2 m/sec unmyelinated)

6

Slow adapting

Monitors muscle tension during contraction

GTO

7

merkel cells

touch

7

golgi tendon organs

1b

(70-120 m/sec)

9

meissner

discrim. touch

9

free nerve endings

pain

temperature

itch

touch

10

ruffini ending

pressure

11

Krause end bulb

thermal (cold)

11

muscle spindle primary endings

1a

(70-120 m/sec)

12

encapsulated endings

endings with accessory structures

meissner

merkel

muscle spindle secondary endings

ABeta

(30-70 m/sec)

14

different energy types

sensory modalities

15

bind to bare nerve endings

5HT

Histamine

K

ACh

Proteolytic enzymes

17

exteroreceptors

external environment

19

proprioreceptors

body position

joint movement

muscle tone

21

slow adaptors

Merkel

Ruffini

Krause

Free nerve endings --> varies

22

endings around hairs

touch

23

Encode brail

Merkel & Meissner

24

Cause itch, flare, & edema

glutamate

neuropeptides

- both from free nerve endings

25

Preganglionic autonomic efferents

B fiber

(3-15 m/sec)

27

gamma-efferent nn.

contraction of intrafusal mm.

28

pacinian

vibration