Sarah is a sprinter who specializes in quick and powerful bursts of speed followed by periods of rest. Priya is a marathon runner who specializes in long, steady runs. Compared to Sarah's muscles, how are Priya's most likely to differ?

A. Priya's type 2X fibers will be larger in diameter.
B. Priya muscles will have more glycogen stored in her type 2X muscle fibers.
C. Priya's muscles will have more mitochondria in her type 1 and 2A muscle fibers.
D. Priya's muscles will have less myoglobin in her type 1 muscle fibers.
E. Priya will have a greater proportion of type 2 muscle fibers and a lower proportion of type 1 fibers than Sarah.


Answer: C

Anatomy & Physiology

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Anatomy & Physiology

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Anatomy & Physiology