With Training, What Changes Will Occur in the Muscles of the Lower

question 166

Multiple Choice

With training, what changes will occur in the muscles of the lower limbs of a marathon runner?

• A) Development of more extensive capillary networks; cells develop more mitochondria
• B) Formation of more actin and myosin, causing enlargement of muscle fibers
• C) Loss of myoglobin and reduction in size of muscle fibers
• D) Drastic increase in number of muscle fibers

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