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Biology

1 answer:

Nimfa-mama [501]4 years ago

5 0

Answer: The sodium-potassium pump.Explanation:

The concentration of sodium and potassium inside and outside the muscle cells are important in the regulation of contraction. These concentrations differ when a muscle is relaxing or contracting.

Contraction: potassium concentrations are higher outside the cell than inside the cell.Relaxation: the potassium concentrations are higher inside the cell than outside the cell.

hope this helps :)

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