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Physiology of Muscle Contraction by 6c2595rqyj is a document available to read on EtoBox.
Muscle contraction is initiated by a nerve impulse that releases acetylcholine, leading to sodium influx and action potential generation, which triggers calcium release for muscle shortening. Relaxation occurs when acetylcholinesterase breaks down ACh, calcium is pumped back into the sarcoplasmic reticulum, and ATP allows myosin detachment. Mitochondria play a crucial role by producing ATP necessary for both contraction and relaxation, with ATP deficiency leading to muscle spasms due to sustained contractio
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