Question

How are alveolis designed to maximizer exchange of gases

Answer 1

Alveoli are sac like structures present in lungs, they have spaces inside from where they exchange gases

Answer 2

alveoli are small rounded or polyhedral pouches which are extremely thin walled and poses a network of capillaries over the surface. They function as respiratory surface is the total area of the alveoli is more than 80m2 square. it is several times more than the surface area of the whole human body