The major form by which carbon dioxide is transported in the circulatory system is:
A) in solution.
B) as bicarbonate ions.
C) as carbaminohemoglobin.
D) none of the above.

Question

Quizplus · Accepted Answer

Carbon dioxide is mostly transported in the form of bicarbonate ions in the circulatory system. This is because bicarbonate ions can easily dissolve in the plasma and be transported to the lungs where carbon dioxide is released. About 70% of carbon dioxide is transported as bicarbonate ions. The remaining carbon dioxide is transported as carbaminohemoglobin (23%) or in solution (7%).

The Major Form by Which Carbon Dioxide Is Transported in the Circulatory