The partial pressure of oxygen in the alveoli of the lungs is -

Question

The partial pressure of oxygen in the alveoli of the lungs is - (A) equal to that in the blood (B) more than that in the blood (C) less than that in the blood (D) less than that of carbon dioxide

Tardigrade Admin · Accepted Answer

Alveoli are the site of gaseous exchange and have a higher partial pressure of oxygen than that of blood. Blood is rich in carbon dioxide at cell and tissue levels due to cellular respiration. The higher partial pressure of oxygen in alveoli allow diffusion of oxygen into the blood.

Q. The partial pressure of oxygen in the alveoli of the lungs is -

equal to that in the blood

more than that in the blood

less than that in the blood

less than that of carbon dioxide

Alveoli are the site of gaseous exchange and have a higher partial pressure of oxygen than that of blood. Blood is rich in carbon dioxide at cell and tissue levels due to cellular respiration. The higher partial pressure of oxygen in alveoli allow diffusion of oxygen into the blood.