In a workout your muscle cells produce lactate, yet you maintain a constant blood pH because ________.
A. metabolic bases are produced at the same rate by muscle cells to neutralize the acids
B. the respiratory system removes excess H+ from the blood before the pH is lowered
C. endothelial cells secrete excess H+ to prevent a decrease in pH
D. metabolic acids are neutralized in muscle cells before released into the blood
E. the body contains chemicals called buffers that resist changes in pH
Answer: E
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