Webin this section, you will examine the anatomy and functions of the three main organs of the upper alimentary canal—the mouth, pharynx, and esophagus—as well as three. Websep 14, 2024 · health & medicine anatomy & physiology. In human digestive system in structures and functions of the human digestive system. Webjan 7, 2013 · 1. Fistula connecting with a bronchus or the trachea.