An advantage of the large fiber diameter of fast glycolytic muscle is
A) it's correlated with its large volume, which in turn means it can hold more oxygen, and generate ATP aerobically.
B) it implies more cross-sectional area and the fiber can therefore hold more mitochondria, which means it can generate more ATP to power contraction.
C) it has less surface area relative to its volume, so it depolarizes more rapidly, since current has less distance to spread.
D) it has more myofibrils per unit length, which means it can form more
Cross-bridges, and generate more power (force) .
E) none of these.
Correct Answer:
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Q14: In an isotonic, concentric contraction,
A) circular muscles
Q15: Which of the following ATP-dependent steps
Q16: Creatine is an important metabolite in muscle
Q17: How much of the energy available in
Q18: Fast muscle fibers differ from slow muscle
Q20: Which fibers will have a rich blood
Q21: In spinal reflex pathways, motor neurons receive
Q22: Regarding the proprioceptors concerned with muscles, the
Q23: Golgi tendon organs are
A) regulated by
Q24: Which of the following statements is correct?
A)
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