1. Appendix. The appendix, also known as the vermix or the cecal appendix, is formed of the same inner mucosa layer as the rest of the digestive system. It is totally peritoneally invested and has both an inner circumferential and an outer longitudinal muscle layer of the muscularis propria. The appendix mucosa is colonic in nature.

2. Stomach. The stomach is a muscular organ on the upper left side of the abdomen. Food enters the stomach through the esophagus. When food reaches the esophagus’s end, it enters the stomach via a muscle valve known as the lower esophageal sphincter. The stomach secretes acid and enzymes that aid in the digestion of meals.

3. Esophagus. The esophagus is a tube that links the pharynx (throat) to the stomach. It measures around 8 inches (20 cm) in length. However, the esophagus is more than simply a hollow tube through which food slides like a water slide. Muscles in the esophagus contract to transfer food to the stomach.

4. Small Intestine. The small intestine, also known as the small bowel, is a 20-foot-long hollow tube that connects the stomach to the beginning of the large intestine. The small intestine digests food from the stomach and absorbs a large portion of its nutrients. The duodenum is the small intestine’s initial section.

5. Large Intestine. The large intestine’s function is to absorb water and salts from material that has not been digested as food and to eliminate any waste products that remain. The majority of digestion and absorption has already occurred by the time food combined with digestive fluids reaches your big intestine. It is found from your waist down in your lower abdominal cavity.

6. Ileum. From the outside, the ileum is completely covered with serosa. It is composed of simple squamous epithelium with a connective tissue layer underneath (lamina propria serosae). The ileum is distinguished by the presence of Peyer’s patches in the mucosal lamina propria and submucosa.

7. Liver. The liver is the primary tissue capable of producing glucose from lactate, glycerol, and amino acids (mainly alanine from muscle). It is a complex organ with several activities. Your liver’s two primary roles in digestion are to produce and emit bile and to filter and purify blood carrying newly acquired nutrients from the small intestine.

8. Duodenum. The duodenum is the small intestine’s initial section. It is linked to the stomach. The duodenum aids in the digestion of meals from the stomach. It takes nutrients (vitamins, minerals, carbs, lipids, and proteins) and water from meals so that the body can utilize them.

9. Gallbladder. The gallbladder performs three functions: it stores bile, concentrates bile, and ejects bile into the small intestine lumen when triggered to contract. Gallbladder enlargement. It is located in the upper right part of your abdomen (belly) and sits just under your liver.

10. Pancreas. The pancreas is located just behind your stomach in your belly. It is around the size of your hand. Your pancreas produces pancreatic fluids known as enzymes during digestion. These enzymes are responsible for the breakdown of carbohydrates, lipids, and starches.