In a muscle undergoes rapid contraction and relaxation, the sarcoplasmic reticulum extensionA. requires constant plugging in and out of `Ca^^(2+)`B. rapidly synthesise myosinC. does not require energy all of these.D. all of these

In a muscle undergoes rapid contraction and relaxation, the sarcoplasm

1.	In a muscle undergoes rapid contraction and relaxation, the sarcoplasmic reticulum extensionA. requires constant plugging in and out of `Ca^^(2+)`B. rapidly synthesise myosinC. does not require energy all of these.D. all of these
Answer» Correct Answer - A Sacoplasmic reticulum of muscle cells store `Ca^(2+)` ions. During contracting of muscle, `Ca^(2+)` ions are released from sarcolasmic reticulum to sarcoplasm and vice versa occurs during relaxation it requires constant plugging in and out of `Ca^(2+)` ions from sarcoplasmic reticulum.

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