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A large proportion of oxygen is left unu...

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 tissues

B

Acts as a reserve during muscular exercise

C

Raises the `pCO_(2)` of blood to 75 mm of Hg

D

Is enough to keep oxyhaemoglobin saturation at 96%

Text Solution

Verified by Experts

The correct Answer is:
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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