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NEET 2011
Exam
NEET
Year
2011
Subject
Zoology
Chapter
Breathing and Exchange of Gases

NEET 2011 · Zoology · Breathing and Exchange of Gases

A large proportion of oxygen is left unsused in the human blood...

A large proportion of oxygen is left unsused in the human blood even after its uptake by the body tissues. This O2\mathrm{O}_2

Options

  1. Araises the pCO2p_{\mathrm{CO}_2} of blood to 75 mm75 \mathrm{~mm} of Hg\mathrm{Hg}
  2. Bis enough to keep oxyhaemoglobin
  3. Chelps in relasing more O2\mathrm{O}_2 to the epithelial tissues
  4. Dacts as a reserve during muscular exercise

Correct answer

D. acts as a reserve during muscular exercise

Step-by-step solution

Our tissue are able to utilize only 25%25 \% of O2\mathrm{O}_2 carried by arterial blood. The venous blood is still 75%75 \% saturated with O2\mathrm{O}_2. This O2\mathrm{O}_2 acts as a reserve during muscular exercise.
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