Why might multiple, small motor units be advantageous over a single large motor unit?   A. They enable finer control over movements.   B. Small motor units contract more rapidly than large motor units.   C. Small motor units have greater capacity for strength improvement.   D. The strength of contraction can be modulated more easily in small motor units.   E. They enable a strong, flexing motion

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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.