Which of the Following Is Not a Reason Muscular Weakness

question 139

Multiple Choice

Which of the following is not a reason muscular weakness tends to develop in old age?

• A) Aged muscle has less glycogen, myoglobin, and creatine phosphate.
• B) There are fewer motor neurons in the spinal cord.
• C) Aged muscle fibers have fewer myofibrils.
• D) There are fewer and smaller mitochondria in aged muscle.
• E) The muscle fibers of aged muscle no longer synthesize myosin.

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