PNS Flashcards
1
Q
Where do preganglionic neurons originate?
A
From CN III, VII, IX, X and sacral segments 2-4
2
Q
What NT do the pre/post ganglionic nerves release?
A
Ach
3
Q
What do nicotinic receptors do?
A
Skeletal muscle contraction
SNS stimulation
4
Q
Where are nicotinic receptors?
A
NMJ
Autonomic ganglia
5
Q
What do D2 receptors?
A
inhibit NE release
Causes psychic disturbances
6
Q
What do D1 receptors do?
A
Dilates renal, splanchnic, and coronary vessels
7
Q
What other organs are alpha 1 receptors in?
A
Pancreas - inhibit insulin release
Intestine, bladder - relaxation, but constriction of sphincters
