Digestive System

Explore the intricacies of the human digestive system in this comprehensive 42-minute video tutorial. Delve into the structure and function of digestive organs, starting with the oral cavity and progressing through the esophagus, stomach, small and large intestines. Examine the layers of the gastrointestinal tract and understand the process of peristalsis. Learn about accessory digestive organs such as the liver, gallbladder, pancreas, and spleen, including their locations and functions. Discover the vascular supply and innervation of the digestive system, covering the foregut, midgut, and hindgut regions. Gain insights into arterial supply, venous drainage, and the hepatic portal system. Conclude with a concise summary and acknowledgements, providing a thorough overview of the digestive system's anatomy and physiology.

​​. Introduction.
. Digestive organs.
. Oral cavity. Teeth, salivary glands.
. Esophagus.
. Layers of the GI tract. Mucosa, submucosa, muscularis externa, serosa, peristalsis.
. Stomach.
. Small intestines. Duodenum, jejunum and ileum.
. Large intestines. Features (taeniae coli, haustra, epiploic appendages), Cecum, appendix, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, anus.
. Accessory digestive organs.
. Liver. Functions, lobes, portal triad, bare area.
. Gallbladder. Location and function.
. Pancreas. Exocrine function (pancreatic enzymes) and Endocrine function (insulin and glucagon).
. Spleen. Location and Function.
. GI Vascular supply and Innervation.
. Foregut, Midgut, Hindgut.
. Arterial supply. Celiac trunk, superior mesenteric artery (SMA), inferior mesenteric artery (IMA).
. Venous drainage. Hepatic portal system.
. Innervation. Sympathetic and parasympathetic .
. In-a-Nutshell.
​​. Acknowledgements.