Question
A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissue. This O2
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Raise the pCO2 of blood 75 mm of Hg.
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Is enough to keep oxyhaemoglobin
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helps in releasing more O2 to the epithelial tissues
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acts as a reserve during muscular exercises
Solution
D.
acts as a reserve during muscular exercises
Our tissue is able to utilise only 25% of O2 carried by the arterial blood. The venous blood is still 75% saturated with O2. This O2 acts as a reserve during muscular exercise.
