This latest deep dive examines the initial, highly controlled stages of protein breakdown as food moves from the mouth through the stomach. We explore how the body utilizes hormonal signaling and chemical warfare—specifically hydrochloric acid and specialized zymogens—to transform complex 3D protein structures into manageable polypeptide chains. This episode highlights the anatomical differences between species and the critical roles of specific gastric cells that ensure digestion is both efficient and self-regulating.

Topic Outline

• Comparative Anatomy of the GI Tract

◦ An overview of the mammalian system (pig model), where the jejunum serves as the primary absorption site, making up 80-90% of the small intestine.

◦ A look at avian anatom ...