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NEET2011ZoologyBreathing and Exchange of GasesActual

A large proportion of oxygen is left unsused in the human blood even after its uptake by the body tissues. This O ₂

Options

  1. Araises the p_ CO ₂ of blood to 75 ~mm of Hg
  2. Bis enough to keep oxyhaemoglobin
  3. Chelps in relasing more 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 % of O ₂ carried by arterial blood. The venous blood is still 75 % saturated with O ₂ . This O ₂ acts as a reserve during muscular exercise.

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