True or False You could decrease sympathetic nervous system

True or False? You could decrease sympathetic nervous system responses by applying an acetylcholine nicotinic receptor antagonist to the sympathetic ganglia.

Solution

Answer:

True

Explanation:

Nicotinic antagonists inhibit the effects of acetylcholine on nicotinic receptors. According to their dominant effects, we distinguish the antagonists acting on the autonomic nervous system which are called ganglionic blocking agents, and those acting on neuromuscular junction which are called neuromuscular blocking agents. They inhibit synaptic transmission in autonomic ganglia. They reduce or suppress both sympathetic and the parasympathetic effects on organs receiving an autonomic innervation. They inhibit the nicotinic postsynaptic receptors without preliminary stimulation, contrary to nicotine which stimulates them in moderate dose and inhibits them in very high dose.