Question

The alveoli is a small sac-like structure present in the lungs that allows gas exchange.

• A. True
• B. False

Answer 1

The correct option is A

True

The alveoli in our lungs are small sac-like structures where the exchange of gases takes place. Carbon dioxide in the blood capillary diffuses into the alveoli and is exhaled out. The oxygen in the air that enters the alveoli is taken up by the blood capillary and transported to all parts of the body.