Jim is lifting weights. Holding a 20lb weight down by his side, he bends his arm...

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Jim is lifting weights. Holding a 20lb weight down by his side,he bends his arm at the elbow, contracting his bicep, and holds theposition until he reaches muscle fatigue. Briefly describe how theHenneman Size Principle relates to this example. List the steps ofmuscle fiber recruitment necessary for the initial lift andsubsequent fatigue. Include a short summary of the muscle fibertypes, and the properties that contribute to the speed ofcontraction, recruitment pattern and metabolic activity.

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Henneman size principle motor units are recruited from smaller to largest based on the need Initially Fewer muscle fibers are needed when larger motor neurons are recruited larger muscle fibers are needed to increase the muscle strength For this many muscle twitches are needed to See Answer

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