About 70% of the CO2 that diffuses into systemic capillaries
A. binds to hemoglobin.
B. forms carbonic anhydrase, which combines carbonic acid and water to solubilize the CO2.
C. combines with water to form carbonic acid, which then dissociates into bicarbonate and hydrogen ions.
D. directly dissolves in the plasma.
Answer: C
Anatomy & Physiology
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