Arrange the steps in the correct order to explain how a muscle fiber contracts. myosin and actin protein filaments attach to each other. calcium ions release into the myofibrils. myosin filaments pull on the actin filaments. the nerve impulse reaches the neuromuscular junction. the motor neuron carries the nerve impulse. the sarcomere shortens.
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Arrange the steps in the correct order to explain how a muscle fiber contracts. myosin and actin pro...
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