Which of the following is an effect of aging on the muscular system?
A) Tolerance for exercise increases.
B) Skeletal muscles become more elastic.
C) Skeletal muscle fibers become smaller in diameter.
D) Muscle fibers contain more myoglobin.
E) Scar tissue formation does not occur.

Question

Quizplus · Accepted Answer

As we age, the diameter of skeletal muscle fibers decreases, also known as sarcopenia. This can result in decreased muscle strength and endurance. A and B are not correct because tolerance for exercise decreases and muscles become less elastic as we age. D and E are not correct because aging does not increase the amount of myoglobin in muscle fibers nor does it prevent scar tissue formation.

Which of the Following Is an Effect of Aging on the Muscular