Describe how an action potential in muscle cells can lead to calcium release from the sarcoplasmic reticulum and a muscle contraction. Include the following terms in your description: a. Action potential b. Sarcoplasmic reticulum c. Voltage-gated calcium channel d. Ligand-gated ion channel (in SR membrane) e. Calcium pump f. Direction of calcium flow (in or out of the cytosol) g. Electrochemical Gradient h. Conformational Change
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An **action potential** is generated in a muscle cell, which is an electrical signal that travels along the cell membrane. Show more…
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What causes the release of calcium ions from the sarcoplasmic reticulum? a. an increase in calcium ions within the T tubules b. the formation of cross-bridges c. an action potential d. contraction of a sarcomere
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