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Ajay Rai

Muscle power:

Skeletal muscle:

Skeletal muscle's made up of overlapping striped muscle fibres, held together by connective
tissue with a tendon at each end. Tendons attach muscle to bone. When the fibres contract, the
muscle shortens, pulls the tendons and moves the bones.

Striped muscle fibre has cytoplasm,…

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Ajay Rai

Neuromuscular junction:

Calcium ions are stored in the ER of the cytoplasm that surrounds each myofibril. When the
muscle's resting, calcium ions are pumped into the ER by active transport.

Action potential travels along motor neurone.

Acetylcholine released at neuromuscular junction (synaptic cleft).

Action potential travels along muscle…


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