The legs of cross-country skiers and long-distance runners are likely to have
A) almost all slow-twitch fibers.
B) almost all fast-twitch fibers.
C) about the same number of slow-twitch and fast-twitch fibers.
D) more slow-twitch fibers.
E) more fast-twitch fibers.
Correct Answer:
Verified
Q7: What is the role of the sarcoplasmic
Q34: How does tropomyosin control muscle contraction?
A) It
Q36: Muscle fibers show a range of responses
Q37: When troponin binds calcium,
A) it allows tropomyosin
Q38: The resting potential of smooth muscle cells
Q40: How do muscle fibers shorten during contraction?
A)
Q41: Which of the following statements about fast-twitch
Q42: Slow-twitch muscles
A) are also called oxidative muscle.
B)
Q43: Anaerobic exercise such as weight lifting
A) increases
Q44: The most important determinant of the proportion
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