The storehouse of calcium ions in the muscle | vedclass

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(A) The storehouse of calcium ions in the muscle fibre is the sarcoplasmic reticulum. In muscle fibres,the endoplasmic reticulum $(ER)$ is specificall

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Endoplasmic reticulum

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(A) The storehouse of calcium ions in the muscle fibre is the sarcoplasmic reticulum. In muscle fibres,the endoplasmic reticulum $(ER)$ is specifically referred to as the sarcoplasmic reticulum. Each muscle fibre is enclosed by a plasma membrane called the sarcolemma,which contains the sarcoplasm. Muscle fibres are syncytial,meaning the sarcoplasm contains many nuclei. $A$ characteristic feature of muscle fibres is the presence of a large number of parallelly arranged filaments in the sarcoplasm,known as myofilaments or myofibrils.

The storehouse of calcium ions in the muscle fibre is

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