Can air sacs be found in the lungs of a man?

Yes, air sacs, also known as alveoli, can be found in the lungs of a man. The alveoli are tiny, balloon-like structures that form the functional units of the lungs, where gas exchange takes place. The alveoli are responsible for the exchange of oxygen and carbon dioxide between the air we breathe and the bloodstream. They provide a large surface area for efficient gas exchange.