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Flashcards in autonomic nervous system Deck (26):
1

autonomic pregangilionic neurons are

myelinated

2

post ganglionic neurons in autonomic system are

unmyelinated

3

SNS innervagion is from

T1-L2: thoracolumbar cell bodies

4

parasympathetic innervation is

craniosacral: cranial nerve nuclei and sacral region of the spinal cord

5

no PNS trunk instead---

its ganglia all exist in the periphery, close to the organs they innervate

6

PNS does not go to

uterus, cardiac muscle, uterus, sweat glands and goosebumps skeletal muscle and only a few BV

7

sympathetic preganglionic fibers

NT: acetylcholine
receptor: cholinergic

8

sympathetic postganglionic

NT: norepinephrine
Receptor: adrenergic

9

parasympatethic pre and post ganglionic

NT: acetylcholine
receptor: adrenergic

10

___ is a modified sympathetic ganglion

adrenal medulla
hit by ACH pumps out E, NE into blood

11

a-adrenergic receptors

a1: excitiation : squeeze things, BV, urethral sphincter
a2: relaxation/ inhibition

12

b-adrenergic receptors

B1: increase HR and contracitility, renin release
B2: facilitates all the rest: relaxes muscles of bronchi and bladder
B3: mediates lipolysis and thermogeneisi

13

nicotinic receptors

PNS
all ACH receptors on postganglionic cells are nicotinic
all at NMJ

14

muscarinic locations

cardiac, exocrine glands, CNS, GI and smooth muscle

15

MSG is a ___ dz

nicotinic receptor dz

16

how treat MSG?

neostigmine: ACHE inhibitor
steroids
plasmaphoresis

17

most common location for primary spinal cord injury

C1-L2

18

primary spinal injury

crush, torsion, severing

19

Secondary spinal cord injury

swelling, delayed tissue destruction

20

spinal cord swelling in __ region = life threatening

cervical spinal region

21

spinal shock

complete loss of reflex function, flaccid paralysis, sensory deficit and loss of bladder and rectal control in all segments below the level of the lesion

22

complications of spinal shock

poor venous circulation

23

excitotoxicity

when damage to CNS release glutamate and aspartate which leads to cellular damage - depends on many factors

24

neurogenic shock

due to loss of sympathetic outflow - presynaptic neurons cannot get to SNS truknk

occurs with cervical or upper thoracic spinal cord injury

25

autonomic dysfunction

occurs with lesions above T7
sudden massive reflex SNS discharge with no opposing PSNS

26

sx seen with autonomic dysfucntion

HTN up to 300 mg
brady cardia
pounding HA, blurred vision, sweating above the lesion with flushing of the skin, piloerection