Which of the following statements is true regarding the Haldane effect?
a. At high SaO2 levels, carbon dioxide more readily forms carbamino compounds.
b. At high SaO2 levels, the capacity of blood to hold carbon dioxide decreases.
c. At high SaO2 levels, the capacity of blood to hold carbon dioxide increases.
d. At low SaO2 levels, the capacity of blood to hold carbon dioxide decreases.
ANS: B
At point "a," the high SaO2 decreases the blood's capacity to hold carbon dioxide, thus helping unload this gas at the lungs.
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