Introduction to Animal Nutrition and Human Digestion

How do living organisms convert food into the energy needed to survive and thrive? Understanding the biological mechanisms of nutrition is fundamental to mastering animal physiology and health sciences. This course guides you through the core concepts of heterotrophic nutrition, breaking down complex biological processes into clear, step-by-step written explanations. You will learn to: Understand the core principles of heterotrophic nutrition and how different organisms obtain energy; Explore unicellular digestion by studying the feeding mechanisms of amoeba; Examine the anatomy of the human alimentary canal and the roles of key digestive glands; Learn the step-by-step physiology of digestion, absorption, and assimilation in animals; Identify common disorders of the digestive system and their biological causes; Discover the modern scientific understanding of the gut microbiome and its impact on metabolic health. You will start with essential terminology and foundational definitions before progressing to the structural anatomy and chemical pathways of animal digestive systems. This course is designed specifically for beginners, biology students, and curious learners looking for a clear introduction to animal physiology, with no prior science background required. Start reading today to build a strong foundation in the biological sciences.