Drugs Affecting The PNS Flashcards
0
Q
Key system:
Sympathetic
Q. Function of the SNS? (9)
A
1.
1
Q
Key system:
Parasympathetic
Q: Function of the PSNS? (9)
A
1.
2
Q
Key term:
Acetylcholine
Q. Define
A
ACh
Neurotransmitter involved in cholinergic transmission.
Binding ACh to receptors increases permeability of postsynaptic membrane to Na & K ions causing depolarising action that results in excitation/inhibition of neural, muscular or glandular activity.
3
Q
Key term:
Muscarinic (M) receptors
Q. Define
A
Parasympathomimetic
Peripherally located in smooth muscle, cardiac muscle and glands.
Centrally involved in motor control, memory and cardiovascular and temperature regulation.
(M1) neural type
(M2) cardiac & presynaptic type
(M3) glandular & smooth muscle type
