Which statement explains how autonomic drugs affect synaptic transmission?

Question

1. Drugs are frequently given to correct autonomic dysfunction.
2. Drugs used to prevent the normal destruction of the neurotransmitter cause the neurotransmitter to remain in the synapse for a longer period of time.
3. Drugs influence the release of neurotransmitters at the postganglionic site.
4. Drugs that decrease the degree of neurotransmitter synthesis stimulate autonomic responses.

Answer 1

Correct Answer: 2
Rationale 1: This is not true; most drugs are used to treat disorders of target organs.
Rationale 2: This is true; these drugs stimulate autonomic responses.
Rationale 3: This is not true; drugs influencing the release of neurotransmitters occurs at the preganglionic site.
Rationale 4: This is not true; drugs that decrease the degree of neurotransmitter synthesis inhibit autonomic responses.
Global Rationale: Drugs used to prevent the normal destruction of the neurotransmitter cause the neurotransmitter to remain in the synapse for a longer period of time is a true statement. The other statements are all false.