Title: Sympatholytic drugs such prazosin (Minipress) and doxazosin (Cardura) Post by: couple007 on Jul 23, 2013 Sympatholytic drugs such prazosin (Minipress) and doxazosin (Cardura) can directly decrease vascular resistance by:
A) stimulating alpha-1 receptors on the arteriole. B) blocking alpha-1 receptors on the arteriole. C) stimulating alpha-2 receptors on the arteriole. D) blocking alpha-2 receptors on the arteriole. E) stimulating beta-1 receptors on the arteriole. Presynaptic adrenergic inhibitors such as reserpine (Serpalan, others) and guanethidine (Ismelin) decrease activity at peripheral arterioles by impairing the release of: A) epinephrine. B) norepinephrine. C) acetylcholine. D) dopamine. E) 5-hydroxytryptamine (serotonin). A sudden severe, life-threatening increase in blood pressure (autonomic crisis) should be treated with: A) diuretics. B) alpha-1 agonists. C) alpha-2 antagonists. D) beta-agonists. E) ganglionic blockers. Title: Re: Sympatholytic drugs such prazosin (Minipress) and doxazosin (Cardura) Post by: irika21 on Jul 25, 2013 Answer:
B) blocking alpha-1 receptors on the arteriole. B) norepinephrine. E) ganglionic blockers. |