The effect of acetylcholine can be stimulating or inhibiting.Which of the following gives the best explanation for why this is so?
A) Acetylcholine has many different forms.
B) Acetylcholine has a "dose effect". Larger doses are stimulating while small doses inhibit.
C) Postsynaptic cells have a dynamic and changing metabolism and respond differently at different times.
D) Different post synaptic cells will have different receptors.
Correct Answer:
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