ANS Anatomy Flashcards
1
Q
SNS Origin
A
Thoracolumbar
T1-L3
2
Q
PNS Origin
A
Craniosacral
CN 3, 7, 9, 10
S 2-4
3
Q
Ganglia Location
A
SNS - near spinal cord
PNS - near or inside effector organ
4
Q
Post-preganglionic ratio
A
SNS - 30:1, signal amplification = mass response
PNS - 1-3:1, precise effector control
5
Q
Preganglionic Fiber
A
SNS - Short myelinated B-fiber
PNS - Long myelinated B-fiber
6
Q
Postganglionic Fiber
A
SNS - Long unmyelinated C-fiber
PNS - Short unmyelinated C-fiber
7
Q
Ganglia neurotransmitter
A
Both = Acetylcholine
8
Q
Ganglia receptor type
A
Both = Nicotinic Type-N
9
Q
Effector neurotransmitter, SNS
A
NE & Ach
- Ach at sweat glands, piloerector muscle, and some vessels
- No postganglionic fibers at adrenal medulla
10
Q
Effector neurotransmitter, PNS
A
Ach
11
Q
Effector receptor type, SNS
A
Alpha, Beta, Dopamine
Muscarininc - sweat glands, piloerector muscle, some vessels
12
Q
Effector receptor type, PNS
A
Muscarinic
