A large proportion of oxygen remains unused in the human blood even after its uptake by the body tissues. This O2 (a) acts as a reserve during muscular exercise (b) raises the pCO2 of blood to 75 mm of Hg (c) is enough to keep oxyhaemoglobin saturation at 96% (d) helps in releasing more O2 to the epithelial tissues.

A large proportion of oxygen remains unused in
the human blood even after its uptake by the body
tissues. This O2
(a) acts as a reserve during muscular exercise
(b) raises the pCO2 of blood to 75 mm of Hg
(c) is enough to keep oxyhaemoglobin saturation at
96%
(d) helps in releasing more O2 to the epithelial
tissues.
by

1 Answer

Answer :

(a) acts as a reserve during muscular exercise
by

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