Author Question: Antimigraine agents act by: 1. blocking parasympathetic nerve impulses. 2. increasing cerebral ... (Read 14 times)

saraeharris · **on:** Jul 23, 2018

Antimigraine agents act by:

1. blocking parasympathetic nerve impulses.
2. increasing cerebral blood flow.
3. constricting dilated cerebral arteries.
4. exerting a sympathomimetic effect.

Question 2

Phenobarbital is a classic example of:

A. an inducing agent.
B. an inhibitor.
C. an active secretant.
D. a competing agent.

JaynaD87 · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

3
Adrenergic-blocking agents dilate the veins in smooth-muscle tissue in the peripheral vascular system and the uterus. This reduces cerebral blood flow and arterial pulsing, which reduces the headache pain.

Answer to Question 2

A