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The ability of a muscle to contract and relax is dependent on the flow of what substance in and out of the muscle cell?

The ability of a muscle to contract and relax is dependent on the flow of what substance in and out of the muscle cell?
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The ability of a muscle to contract and relax is dependent on the flow of what substance in and out of the muscle cell?

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User Will Hogan
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1 Answer

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Sodium [Na+] ions rush in to cause contraction, and rush out during relaxation.
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User Mpoisot
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