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A muscle contraction begins when

A muscle contraction begins when
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1 vote
A muscle contraction begins when

User Hao Luo
by
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3 votes
When acetylcholine is released and binds to receptors on the muscle membrane. Hope this helps! ❤
User Spas
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ACh released into the neuromuscular junction and binds to receptors on the sarcolemma

User Jared Loomis
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9.0k points
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