Via the art of pencil paper drawing, what is being demonstrated is the basic human respiratory system, which explains the proper and anatomically correct placement of the necessary organs. Beginning at the entry/exit points of this system we can find the nose —located in the cephalic region of the body, as a slight protrusion used to filter inspired air. As well as the mouth —being an oval-shaped opening allowing a passageway to the pharynx and windpipe. From the respiration of air, there are two large airways called the bronchi and bronchioles, respectively. These airways allow for the two cone-shaped organs located in the chest cavity, known as the lungs, to be used in the oxygenation process of blood. From which the exhalation of this process processes a gaseous byproduct, carbon dioxide.
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