Question

There are microscopic air sacs called___located at the___of the bronchioles.

• A. alveolar sacs
• B. bronchioles

Answer 1

Bronchioles:

1. In the lungs, bronchi further divide into smaller branches called bronchioles.
2. At the end of bronchioles, there are smaller microscopic air sacs called alveolar sacs.
3. Each sac is formed of a group of alveoli and it is provided with blood capillaries for a rich supply of blood.

Final answer: There are microscopic air sacs called alveolar sacs located at the end of the bronchioles.