3 years ago

Acetylcholine binds to its receptor in the sarcolemma and triggers __________.

Chemistry

1 answer:

gladu [14]3 years ago

6 0

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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