A large proportion of oxygen is left unused the human blood even after – InterviewSolution

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1.	A large proportion of oxygen is left unused the human blood even after its uptake by the body tissue. This `O_(2)`A. Helps in releasing more `O_(2)` to the epithelium tissuesB. Acts as a reserve during muscular exerciseC. Raises the `pCO_(2)` of blood to 75 mm of HgD. Is enough to keep oxyhaemoglobin saturation at 96%
Answer» Correct Answer - b our tissues are able to utilise only 25 % of `O_(2)` carried bt artetrial blood. Our venous blood is still 75 % saturated with `O_(2)` . This `O_(2)` acts as a resebve during muscular exercise.

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