Question

question 5
1 pts
the site of gas exchange in the human lung is the alveoli.
true
false

Explanation:

Alveoli are tiny air sacs in the lungs. They have thin walls and a large surface area. Oxygen from the inhaled air diffuses across the alveolar walls into the bloodstream. At the same time, carbon dioxide from the blood diffuses into the alveoli to be exhaled. This process makes them the site of gas exchange.

Answer:

True