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Today, 08:12

What causes the movement of calcium and sodium ions in and out of cardiac cells?

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  1. Today, 08:16
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    Alcium is removed from cells by two basic mechanisms. The first mechanism involves an ATP-dependent Ca + + pump that actively removes calcium from the cell (see figure at right). The second mechanism is the sodium-calcium exchanger. The exact mechanism by which this exchanger works is unclear. It is known that calcium and sodium can move in either direction across the sarcolemma.
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