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The Bowling phase in cricket requires stressful use of back muscles, in particular, hyperextension, lateral flexion and thoraco-lumbar rotation. Additionally, muscles of the shoulder, especially the rotator cuff â a group of four, deep-lying, band muscles) â are heavily relied on.
The sarcolemma is the membrane that surrounds the muscle fibre. It has in-growths known as T-tubules in places, which enables signals in the form of action potentials to penetrate down into the cell and activate the sarcoplasmic reticulum.-tubules are in-growths of the membrane of the muscle cell (the sarcolemma). When an action potential travels across the membrane of the muscle cell, it travels down T-tubules into the heart of the muscle cell, enabling crossbridge cycles to be initiated simultaneously.