Answer:
The answer is B: opens receptor galted NA+ channels
Explanation:
The action of acetylcholine in a muscle cell is to activate the sodium (Na +) channels through receptors. There are two types of acetylcholine receptors:
- Nicotinic or ionotropic receptor = The action on this receptor is excitatory.
- Muscarinic or metabrotopic receptor = The action on this receptor is inhibitory.