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Flashcards in ANS Anatomy Deck (12)
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1

SNS Origin

Thoracolumbar
T1-L3

2

PNS Origin

Craniosacral
CN 3, 7, 9, 10
S 2-4

3

Ganglia Location

SNS - near spinal cord
PNS - near or inside effector organ

4

Post-preganglionic ratio

SNS - 30:1, signal amplification = mass response
PNS - 1-3:1, precise effector control

5

Preganglionic Fiber

SNS - Short myelinated B-fiber
PNS - Long myelinated B-fiber

6

Postganglionic Fiber

SNS - Long unmyelinated C-fiber
PNS - Short unmyelinated C-fiber

7

Ganglia neurotransmitter

Both = Acetylcholine

8

Ganglia receptor type

Both = Nicotinic Type-N

9

Effector neurotransmitter, SNS

NE & Ach
-Ach at sweat glands, piloerector muscle, and some vessels
-No postganglionic fibers at adrenal medulla

10

Effector neurotransmitter, PNS

Ach

11

Effector receptor type, SNS

Alpha, Beta, Dopamine
Muscarininc - sweat glands, piloerector muscle, some vessels

12

Effector receptor type, PNS

Muscarinic