The actual exchange of gases takes place in the [[1]] of the lungs.

The actual exchange of gases between the lungs and the bloodstream occurs in the lungs' alveoli.

The alveoli are small air sacs at the end of the respiratory system that allow gases to exchange. When we breathe in, oxygen from the air enters the alveoli and diffuses into the bloodstream. Carbon dioxide, a byproduct of cellular respiration, diffuses from the bloodstream into the alveoli and is expelled from the body.

The alveolar walls are extremely thin, allowing for a rapid exchange of gases. This efficient gas exchange ensures that our cells receive the oxygen they require to produce energy while also eliminating carbon dioxide waste from the body.