A 62-Year-Old Male Collapsed While Unloading a Truck of Heavy

A 62-year-old male collapsed while unloading a truck of heavy sacks of feed for his cattle. When he arrived in the emergency department, blood gases reveal a slightly acidic blood sample. The nurse caring for this patient is not surprise with this result based on which of the following pathophysiological rationales?

A) The skeletal muscles are producing large amounts of lactic acid and release it into the bloodstream during heavy work/exercise.
B) During exercise, catabolism will break down stored nutrients and body tissues to produce energy.
C) Large amounts of free energy are released when ATP is hydrolyzed and then converted into adenosine diphosphate.
D) Within the mitochondria, energy from reduction of oxygen is used for phosphorylation of ADP to ATP.

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