A large proportion of oxygen remains unused in the human blood even after its uptake by the body tissues. This O2 _.
Correct answer: A. Acts as a reserve during muscular exercise
- A. Acts as a reserve during muscular exercise
- B. Raises the pCO2 of blood to 75 mmHg
- C. Is enough to keep oxyhaemoglobin saturation at 96%
- D. Helps in releasing more O2 to the epithelial tissues
Explanation
The unused oxygen in the blood acts as a reserve, which can be utilized during physical activities such as exercise when the body's oxygen demand increases. This ensures sufficient oxygen supply to the muscles.
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