Table of Contents Introduction Lung – Anatomy Borders of Lungs Surfaces of Lungs Right and Left Lung Microanatomy Alveoli Lung Microbiota Blood Supply Nerve Supply Function of the Lungs Related Diseases Frequently Asked Questions Introduction Lungs are the primary respiratory organs found in humans and most animals. The respiratory system consists of lung parenchyma and airway. The airway consists of the bronchus, which bifurcates into trachea and further divides into bronchioles and ... The primary function of the lungs is to facilitate the exchange of gases, specifically oxygen and carbon dioxide, between the air we breathe and the bloodstream. This article describes the anatomy, blood supply, innervation, lymphatics, and functions of the lungs. Learn this topic now at Kenhub! The very important function of the lungs is to provide oxygen to the body. When we breathe in, the process is called inhaling, the air enters the lungs through the mouth, nose, and trachea.