In contrast to slow oxidative fibers, fast glycolytic fibers ________.

A. have more capillaries
B. fatigue more quickly
C. contain more myoglobin
D. contain more mitochondria
E. contract more slowly


Answer: B

Anatomy & Physiology

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Troponin assists in controlling the interaction between myosin heads and thin filaments by

A) moving the tropomyosin molecules to expose the active sites. B) assisting in the formation of the myofilaments. C) forming a long chain that covers the active sites. D) holding the tropomyosin strands in place. E) both holding and moving the tropomyosin strands.

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What purpose do heart valves serve?

What will be an ideal response?

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The spindle apparatus is fully formed by the end of

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