A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2

Question

A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2 (A) Raises the pCO2 of blood to 75mm of Hg . (B) Is enough to keep oxyhaemoglobin. (C) Helps in releasing more O2 to the epithelial tissues. (D) Acts as a reserve during muscular exercises.

Tardigrade Admin · Accepted Answer

Our tissues are able to utilise only 25 % of O2 carried by arterial blood. The venous blood is still 75 % saturated with O2 . This O2 acts as a reserve during muscular exercise.

Q. A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This $O_{2}$

Raises the $pC O_{2}$ of blood to $75 mm$ of $H g$ .

Is enough to keep oxyhaemoglobin.

Helps in releasing more $O_{2}$ to the epithelial tissues.

Acts as a reserve during muscular exercises.

Our tissues are able to utilise 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.

Q. A large proportion of oxygen is left unused in the human blood even after its uptake by the body tissues. This O2​

Raises the pCO2​ of blood to 75mm of Hg .