Acetylcholine binds to its receptor in the sarcolemma and triggers __________.
1 answer:
Answer:
b. The opening of ligand-gated cation channels
Step-by-step explanation:
When an acetylcholine ligand molecule binds to its receptor in the sarcolemma, it triggers a conformational change.
A "gate" in the receptor opens and allows Na⁺ ions to pass through a channel into the muscle fibre.
Hence the term ligand-gated cation channel.
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