Where does the alveoli go to when the oxygen molecules pass through the walls into the whqt?

When oxygen molecules pass through the walls of the alveoli, they enter the surrounding capillaries, which are tiny blood vessels. From there, the oxygen binds to hemoglobin in red blood cells and is transported throughout the body to tissues and organs that need it. This process is part of the respiratory and circulatory systems working together to supply oxygen and remove carbon dioxide.