Every 100 ml of oxygenated blood can deliver around ___ ml of ${\mathrm{O}}_2$ to tissues, under normal physiological conditions.

The average oxygen-carrying capacity of hemoglobin is approximately 1.34 milliliters of oxygen per gram of hemoglobin. In a typical adult, the hemoglobin concentration in the blood is around 12 to 16 grams per deciliter (g/dL), although this can vary depending on factors such as age, sex, and health status.

To calculate the oxygen-carrying capacity of blood, we can use the following formula:

Oxygen-carrying capacity (in mL/dL) = Hemoglobin concentration (g/dL) × 1.34 ml/g

For example, if a person has a hemoglobin concentration of 15 g/dL:

Oxygen-carrying capacity = 15 g/dL × 1.34 mL/g ≈ 20.1 ml/dL

This means that each deciliter of blood can carry approximately 20.1 milliliters of oxygen when fully saturated.

Every 100 ml of oxygenated blood can deliver around 5 mL of O₂ to the tissues under normal physiological conditions.