Role of acetylcholine and calcium ion in muscle relaxation. Introduction: A muscle fiber is said to be normal when it not only contracts but also relaxes. In the process of muscle contraction, the ion channels, action potential, and neuromuscular junction work jointly. When muscle fibers of the motor unit receive an impulse, a reaction is stimulated between the actin and myosin filament of the ACh sarcomere. Because of this reaction, muscle contraction starts.

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Chapter 10.4, Problem 6QC

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Role of acetylcholine and calcium ion in muscle relaxation.

Introduction:

A muscle fiber is said to be normal when it not only contracts but also relaxes. In the process of muscle contraction, the ion channels, action potential, and neuromuscular junction work jointly. When muscle fibers of the motor unit receive an impulse, a reaction is stimulated between the actin and myosin filament of the ACh sarcomere. Because of this reaction, muscle contraction starts.

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