Alveolar sacs are clusters of alveoli, the tiny air-filled sacs in the lungs where gas exchange occurs. They play a critical role in oxygenating blood and removing carbon dioxide from the body.
Alveoli: Small air-filled spaces in the lungs where oxygen and carbon dioxide are exchanged with blood.
Pulmonary System: The system of organs involved in breathing, including the lungs, trachea, bronchi, and diaphragm.
Oxidative Stress: An imbalance between free radicals and antioxidants in the body, which can damage cells including those in the lungs.