Under normal physiological conditions in human beings every $100\text{ml}$ oxygenated blood can deliver ____ $\text{ml}$ of ${\text{O}}_2$ to the tissues.

ShutterstockIn a healthy individual, every $100\text{ml}$ of oxygenated blood carries about $20\text{ml}$ of ${\text{O}}_2$. Under normal resting conditions, only about $25\%$ of this is delivered to the tissues, which equates to $5\text{ml}$ of ${\text{O}}_2$.