Oxygen Debt in Muscles May Develop Because of

question 88

Multiple Choice

Oxygen debt in muscles may develop because of

• A)the inability of respiratory and circulatory systems to supply enough oxygen to skeletal muscles when used strenuously for a minute or two.
• B)the inability of myoglobin molecules to store enough oxygen when skeletal muscles are used strenuously for a minute or two.
• C)too much oxygen used in forming pyruvic acid when skeletal muscles are contracted strenuously for a minute or two.
• D)too high a concentration of oxygen in the atmosphere.

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