Peripheral Nervous System "SNS) Flashcards Preview

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Flashcards in Peripheral Nervous System "SNS) Deck (44)
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1

The Peripheral Nervous system has 2 divisions what are they?

somatic
Autonomic

2

the somatic nervous system sends Motor (efferent) impulses to where?

Skeletal muscle
(does not have a junction as the Autonomic does)

3

The autonomic nervous system has 2 divisions. what are they?

Sympathetic nervous system (SNS)
Parasympathetic Nervous System (PNS)

4

Sympathetic PREganglionic nerves generally have _____ lengths. While sympathetic POSTganglionic neurons have ______ lengths

short lengths (preganglionic)
Long Lengths ( post ganglionic)

5

Parasympathetis PREganglionic nerves generally have ______ lengths. While Parasympathetic POSTganglionic neurons have _____ lengths.

Long lengths (preganglionic)
Short Lengths (postganglionic)

6

What is the predominant NT in the periphery

ACh

7

the Autonomic division is also termed the what division?

Visceral Efferent division

8

what is a ganglion

A peripheral collection of nerve cell bodies

9

how can you tell the autonomic division vs the somatic division

the autonomic division has an interruption

10

is the peripheral nervous system protected by bones?

no

11

explain the Parasympathetic Nervous system
include Pre and post ganglion fiber, and NT

Long preganglionic
Short Postgangionic
preganglionic and Postgangliionic NT ACH
Cholinergic fibers

12

What type of fibers are the PNS?

Cholinergic

13

explain the sympathetic Nervous system
include Pre and post ganglion fiber, and NT

Short pre
Long post
Pre NT ACh
Post NT NE
Adrenergic Fibers

14

What type of fibers are the SNS

Adrenergic

15

what part of the Autonomic division is the odd ball and why?

Adrenal Medulla
b/c it has to Post ganglionic, the preganglionic fiber goes directly to adrenal medulla and releases ACh then the adrenal medulla releases hormones epi and NE

16

what does the somatic divisions nerve fiber look like?

1 long uninterrupted neuron
from cord to skeletal muscle

17

What NT does the Somatic division release at the nerve terminal?

ACh

18

What receptors are found on tissues innervated by the PNS

Muscarinic

19

What receptors are found at the autonomic ganglion on the cells of the adrenal medulla and motor end-plate of skeletal muscle?

Nicotinic

20

receptors can be what 2 types?

ion channels (open)
G-protein coupled (2nd messengers)

21

What type of receptor is the nicotinic

Ion channel

22

What type of receptor is the muscarinic

G -protein

23

How would you know if it is a muscarinic receptor?

it's at the tissue

24

see page 32 of sweat book to see the receptor sites

look at muscarinic and nicotinic

25

what is the other name for the SNS

thoracolumbar

26

The SNS or thoracolumbar system outflow arises from what segments

T-1 to L2 (or L3)

27

Most sympathetic PREganglionic neurons synapse with the POSTganglionic fibers where?

paravertebral ganglion (side note.. this is right next to the spinal cord thus the reason for SNS has a Short preganglionic and long post

28

the Sympathetic cardiac accelerators arise from where?

T1-T4

29

The stellate ganglion is formed by what?

the inferior cervical and first thoracic ganglion

30

tell me 3 ways to know that it is the SNS

Short pre
Long post
Arise from thoracic or lumbar

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