Explore the mechanics of the digestive system in this comprehensive 25-minute video. Learn about the gastrointestinal tract physiology and biochemistry, covering digestion, absorption, and excretion processes. Understand key concepts such as mechanical and chemical digestion, intracellular and extracellular digestion, and the role of the sympathetic nervous system. Dive into the functions of various digestive organs, including the mouth and stomach, and discover how glands contribute to the digestive process. Gain insights into common digestive issues like indigestion, malabsorption, diarrhea, and constipation. Test your knowledge with quizzes throughout the video to reinforce your understanding of this essential bodily system.