Short / long answer type questions.
How many milliliters of $C O_{2}$ are in 100 ml of deoxygenated blood at rest, and how many milliliters of $O_{2}$ are in 100 ml of oxygenated blood during strenuous exercise?

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Solution

Under normal physiological conditions, every 100 ml of oxygenated blood delivers about 5 ml of O $_{2}$ to the tissues.
Under normal physiological conditions, every 100 ml of deoxygenated blood delivers about 4 ml of CO $_{2}$ to the alveoli.
During strenuous exercise, the affinity of hemoglobin towards oxygen decreases due to the lactic acid formation and increased body temperature resulting into its decreased transport than normal.

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