MICROANATOMY

Detailed explanation-1: -Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.

Detailed explanation-2: -The alveoli form clusters, called alveolar sacs, that resemble bunches of grapes.

Detailed explanation-3: -An alveolus is one of the many small, grape-like sacs that are attached to the alveolar ducts. An alveolar sac is a cluster of many individual alveoli that are responsible for gas exchange.

Detailed explanation-4: -Explanation: The spherical or grape-like shape of the alveoli allows for maximum contact between the alveoli and the capillaries that surround them.

Detailed explanation-5: -Each respiratory bronchiole gives rise to several alveolar ducts and alveolar sacs, giving it the characteristic grape bunch appearance. The alveolar sacs are the ends of the respiratory tree and the site of gaseous exchange.