Acetylcholine, epinephrine, dopamine, and histamine are:
Correct answer: C. neurotransmitters
- A. prescription-only drugs
- B. synapses
- C. neurotransmitters
- D. beta blockers
Explanation
These substances can act as neurotransmitters, chemical messengers that transmit signals between neurons or from neurons to muscles and glands. Synapses are the junctions where such communication occurs, not the chemicals themselves.
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