MediumZoologyBreathing and Exchange of Gases
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Every 100 mL of deoxygenated blood delivers approximately ______ of CO2 to the alveoli.
A
5 mL
B
4 mL
C
10 mL
D
2 mL
Explanation
While 100mL of oxygenated blood delivers 5mL of O2 to tissues, 100mL of deoxygenated blood carries 4mL of CO2 back to the lungs.
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