If acetylcholine binds to muscarinic receptors, A) Na⁺ channels open. B) Ca²⁺ channels open. C) adrenaline is released. D) G proteins mediate the cell's response. E) the response is neither excitatory nor inhibitory.

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Quizplus · Accepted Answer

Muscarinic receptors, which acetylcholine binds to, are part of the G protein-coupled receptor family. When activated, they initiate a cascade of intracellular events mediated by G proteins, leading to various cellular responses depending on the cell type and the specific muscarinic receptor subtype involved.

If Acetylcholine Binds to Muscarinic Receptors