Lobules are small, rounded sections found in various organs of the body, such as the liver and lungs. They help organize the structure and function of these organs, allowing them to work efficiently. For example, in the liver, lobules are responsible for processing nutrients and filtering toxins from the blood. In the lungs, lobules contain tiny air sacs called alveoli, where the exchange of oxygen and carbon dioxide occurs. This division into lobules helps maximize the surface area for gas exchange, making breathing more effective. Overall, lobules play a crucial role in maintaining the health and function of vital organs.