What is the entry and exit point of the lungs called?

The entry and exit point of the lungs is termed the hilum. This is a crucial anatomical area where various structures pass into and out of the lungs, including the bronchi, blood vessels (such as pulmonary arteries and veins), nerves, and lymphatics. The hilum is located on the medial surface of each lung and serves as the gateway for these essential components that facilitate pulmonary function.

Understanding the hilum's role is important in the context of respiratory physiology because it is at this point that the lungs connect with the systemic circulation and receive air from the respiratory system. Changes or pathologies affecting the hilum can significantly impact lung function and overall respiratory health.