Summation in a single muscle fibre means that Select one: a. the fibre increases the frequency of contraction  b. the fibre stays contracted longer  c. the fibre increases the force of the contraction and stays contracted longer  d. the fibre increases the force of the contraction  e. the fibre increases both the force and frequency of contraction

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.