Your elbow and the muscles around it form a lever system for lifting things. Your biceps reaches from your upper arm and inserts 2 inches beyond your elbow joint. If you hold a barbell in your hand, the weight you are lifting when you do a bicep curl is 12 inches from your elbow joint. What is the mechanical ratio (Fload / Fmuscle) for the elbow in this case? O O 0.166 0.33 1 3 6

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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.