In human lungs, the gas exchange surface area provided by _______ is enormous.

Question

Quizplus · Accepted Answer

The alveoli are small, thin-walled, air-filled sacs in the lungs where gas exchange occurs between the air and the bloodstream. There are millions of alveoli in the human lungs, providing a very large surface area for gas exchange. This makes the lungs incredibly efficient at exchanging oxygen and carbon dioxide between the air and the blood. The other choices (trachea, gills, parabronchi, and bronchi) are not as well-suited for gas exchange as the alveoli.

In Human Lungs, the Gas Exchange Surface Area Provided by _______