During strenuous exercise, muscles may not be supplied with enough oxygen, causing a shift in metabolism resulting in the breakdown of pyruvic acid to lactic acid. This change in metabolism is called the
A. lactic acid threshold.
B. glycogenic threshold.
C. aerobic threshold.
D. pyruvic acid threshold.
Answer: A
Anatomy & Physiology
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A) voltage-gated K+ ion channels to close. B) voltage-gated Na+ ion channels to open. C) ligand-gated Ca2+ ion channels to open. D) ligand-gated Cl- ion channels to open. E) both A and B
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Which type of nerve would cause a blood vessel to constrict?
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Anatomy & Physiology