Fast muscle fibers can adapt to aerobic metabolism by generating more mitochondria in response to
A) repeated, exhaustive stimulation.
B) sustained low levels of muscle activity.
C) high amounts of oxygen.
D) increased levels of testosterone.
E) prolonged periods of inactivity.
Answer: A
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A. neutrons; number of protons B. protons; number of protons plus neutrons C. neutrons; number of protons plus electrons D. protons; weight of all the electrons
What stimulus causes the release of renin?
A. Low blood oxygen B. Low blood pressure C. High blood pressure D. Low blood sodium
What muscle action means to lower the shoulders or open the jaw?
A. Reposition B. Opposition C. Elevation D. Depression
What does "B" represent on the diagram of the skull and brain?
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