What Can the Neurotransmitter Acetylcholine in Vertebrates Do

question 4

Multiple Choice

What can the neurotransmitter acetylcholine in vertebrates do?

• A)be released into circulation and act as a hormone
• B)make it more difficult for some presynaptic membranes to reach threshold
• C)act as a direct neurotransmitter between neurons and muscle cells
• D)be released into circulation and act as an enzyme

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