Illustration of a transparen upper body with visible respiratory organs, heart and diaphragm.
The air flows through mouth and nose into the throat (pharynx) and then through the larynx into the trachea that seperates into two main bronchi. The trachea is recognizable by its cartilcage.
The bronchi divide into lobular bronchi and then into segmental bronchi and then bronchioli and then respiratory bronchioli and alveolar sacs where the gas exchange happens.
The right lung consists of three lobes with 10 segments. The left lung has only two lobes and 9 segments because the heart takes up more space on the left side. The left lung is cut open in the picture and the bronchi and bloos vessels are visible.
The diaphragm, the most important respiratory muscle is situated directly under the lungs.
The pulmonary trunc (blue) that transports the de-oxygenized blood from the heart to the lungs, is also visible.