How do the alveoli in the lungs exchange gases?
1 Answer
Mar 3, 2018
Through diffusion
Explanation:
Alveoli are specially designed for maximizing the surface area for diffusion process.
They have thin walls which facilitate diffusion process and are richly supplied with blood capillaries.
The oxygen which has higher concentration in the alveoli diffuses into the blood capillaries which have lower concentration of oxygen.
Whereas , the carbon dioxide which has higher concentration in the blood capillaries diffuses into alveoli which have lower concentration of carbon dioxide.
In this way , exchange of gases takes place in the alveoli.
