Final answer:
Common alpha 1 selective antagonists are prazosin, terazosin, and doxazosin, which are used to treat hypertension by causing vasodilation. β-blockers, such as atenolol, metoprolol, and propranolol, reduce heart rate and blood pressure. Calcium channel blockers like nifedipine, verapamil, and diltiazem affect heart and blood vessel function by blocking calcium entry.
Step-by-step explanation:
The common alpha 1 selective antagonists include prazosin, terazosin, and doxazosin. These medications interact with the sympathetic nervous system and are used to treat conditions like hypertension by causing vasodilation and reducing blood pressure.
β-blockers, such as atenolol, metoprolol, and propranolol, work on β-receptors in the heart to reduce heart rate and blood pressure. Clonidine, methyldopa, and guanfacine are examples of sympatholytic drugs that affect the sympathetic nervous system, which can be used as antianxiety medications or for treating other conditions like hypertension.
Meanwhile, drugs like nifedipine, verapamil, and diltiazem are calcium channel blockers that affect cardiac function by preventing calcium from entering cells of the heart and blood vessel walls, leading to decreased heart rate and dilation of the blood vessels.