Diagram of Human Lungs shows that the lungs begin at the bottom of our trachea. The trachea is a tube that carries the air in and out of our lungs. Each lung has a tube known as a bronchus that connects to the trachea. The trachea and bronchi airways form an upside-down "Y" in our chest which is known as the bronchial tree.. Learn the structure of lungs with clear explanation of parts airways lobes alveoli and their role in respiration with easy diagram based understanding
Detailed overview of lung anatomy, including lobes, surfaces, bronchial tree, blood supply, nerve supply, lymphatic drainage, and clinical relevance.. Muscles expand the thoracic cavity and decrease the pressure inside the alveoli to draw atmospheric air into the lungs. This process of drawing air into the lungs is known as inhalation or inspiration. Muscles can also contract the size of the thoracic cavity to increase the pressure inside of the alveoli and force air out of the lungs.