Most of the carbon dioxide in the blood is transported
A)dissolved in the plasma.
B)as carbaminohemoglobin.
C)as bicarbonate ions in the plasma.
D)All apply.

Question

Quizplus · Accepted Answer

Most of the carbon dioxide in the blood is transported as bicarbonate ions in the plasma. Around 70% of carbon dioxide in the blood reacts with water to form carbonic acid, which then dissociates into bicarbonate ions and hydrogen ions. These bicarbonate ions are transported in the plasma to the lungs where they are converted back into carbon dioxide for elimination.

Most of the Carbon Dioxide in the Blood Is Transported