Calcium ions released from the sarcoplasmic reticulum enter the ______________.Multiple ChoicenucleussarcoplasmT tubulessarcolemma
Question
Calcium ions released from the sarcoplasmic reticulum enter the ______________.Multiple ChoicenucleussarcoplasmT tubulessarcolemma
Solution
The correct answer is sarcoplasm.
Step by Step Explanation:
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The question is about the process of muscle contraction at a cellular level.
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In muscle cells, the sarcoplasmic reticulum (SR) is a specialized type of endoplasmic reticulum that regulates the calcium ion concentration in the cytoplasm of striated muscle cells.
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Upon receiving a signal (like a nerve impulse), the SR releases stored calcium ions into the sarcoplasm, which is the cytoplasm of a muscle cell.
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These calcium ions then bind to proteins within the muscle cell, triggering a series of events that lead to muscle contraction.
So, calcium ions released from the sarcoplasmic reticulum enter the sarcoplasm.
Similar Questions
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Excitation-contraction coupling begins with ______________.Multiple Choicethe release of a cross-bridgedepolarization of the transverse tubulesthe release of calcium from the sarcoplasmic reticulumproduction of an action potential on the sarcolemma
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