Question

drugs that block nicotinic receptors would be
parasympathetic blocking agents.
sympathetic blocking agents.
autonomic blocking agents.
sympathomimetic.
parasympathomimetic.

Explanation:

Nicotinic receptors are present at the ganglionic junctions of both the sympathetic and parasympathetic divisions of the autonomic nervous system. So, drugs that block nicotinic receptors would affect both divisions, making them autonomic blocking agents. Parasympathetic blocking agents (e.g., atropine - acts on muscarinic receptors) and sympathetic blocking agents (e.g., alpha or beta blockers) target specific receptors in their respective divisions. Sympathomimetic agents mimic sympathetic effects and parasympathomimetic agents mimic parasympathetic effects.

Answer:

autonomic blocking agents.