What are the branches called that the trachea divides into?

The branches that the trachea divides into are known as bronchi. As the trachea extends downward into the chest cavity, it bifurcates into two primary bronchi—one for each lung. Each primary bronchus will further subdivide into smaller bronchial branches, allowing for an extensive network throughout the lungs. This structure is essential for facilitating the flow of air into the lungs, where gas exchange occurs at the alveolar level.

Alveoli, lobes, and atria refer to different anatomical structures within the respiratory and cardiovascular systems. Alveoli are tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged. Lobes are larger sections of the lungs, and the term atria typically refers to the upper chambers of the heart. Understanding the specific roles and relationships of these structures is crucial for grasping the anatomy and physiology of the respiratory system.