👉 The term "mesosternum" is often used to describe a type of organ found in the lungs. It refers to the area that contains the alveoli, or tiny air sacs, which are responsible for exchanging gases between the lungs and the bloodstream. The alveoli are surrounded by a network of capillaries, which allow oxygen-rich blood to pass through them and carbon dioxide-rich air to leave. This process is essential for maintaining homeostasis in the body, as it
