PATHOLOGY

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: -A pulmonary alveolus (plural: alveoli, from Latin alveolus, “little cavity"), also known as an air sac or air space, is one of millions of hollow, distensible cup-shaped cavities in the lungs where pulmonary gas exchange takes place.

Detailed explanation-3: -The lung alveoli are the balloon-like air sacs loacted at the distal ends of the bronchial tree. There are as many as 700 million alveoli in each lungs, where they facilitate gaseous exchange of oxygen and carbon dioxide between inhaled air and the bloodstream.

Detailed explanation-4: -What is the difference between alveoli and alveolar duct? Alveoli are the terminal pockets of the lungs where gas exchange occurs (within alveolar sacs). Alveolar ducts connect these small pockets to the bronchioles of the lungs.