What is the function of the alveoli in the lungs?

The function of the alveoli in the lungs is essential for facilitating gas exchange. Alveoli are tiny, balloon-like structures at the end of the bronchioles and are the primary site where the exchange of oxygen and carbon dioxide occurs. Their walls are extremely thin, allowing oxygen from the inhaled air to pass through into the bloodstream while carbon dioxide, a waste product of metabolism, moves from the blood into the alveoli to be exhaled.

This efficient gas exchange process is vital for maintaining the body’s oxygen levels and removing carbon dioxide, ensuring that our organs and tissues receive the oxygen they need to function properly. The large surface area provided by the numerous alveoli increases the efficiency of this exchange, making it a critical aspect of respiratory physiology.