What is the site of gas exchange?

Answer 1

The site of gas exchange in lungs is alveolar sac...it is a small sac like structure which contracts n expands when gases are exchanged..it is connected to bronchiole..which in turn connected to bronchus..this whole structure is like an inverted tree

Answer 2

Gas exchange takes place inside the lungs in the alveoli. The alveoli are a "grape like" structure at the very end of the respiratory tract. The alveoli are composed of a very thin membrane that separates the blood vessels from the gas chambers. The thin membrane allows diffusion of oxygen into the blood stream and diffusion of carbon dioxide (CO2) out of the blood stream. Once the CO2 has diffused into the alveoli, it is exhaled.

Answer 3

In the capillaries