The walls of the alveoli are composed of two types of cells. What are these types of cells and their functions?

The correct answer is: Type 1 Pneumocytes, and Type 2 Pneumocytes.

Explanation:

The alveoli are structures that form a hollow cavity and are found in the lungs. Alveoli have the very important task of gas exchange, in which deoxygenated blood becomes oxygenated blood to be distributed to every organ in the body.

Alveoli walls are composed of two types of cells:

Type 1 Pneumocytes have the function of gas exchange between the capillaries, and for that reason, they are very thin and permeable. Type 2 Pneumocytes have the function to produce surfactant, a substance very important to maintain the elastic recoil of the lungs. Without surfactant, the lungs would collapse.