The organ that is behind the belly button is the small intestine. It is part of the body's digestive system.Know More
Partially digested food from the stomach enters into the small intestine via the pyloric valve. The most vital part of food digestion takes place in the small intestine. Measuring approximately 21 feet in length, it is coiled loosely in the abdomen.
The small intestine is comprised of ileum, duodenum and jejunum. Food is broken down in the duodenum, the intestine's upper portion. To cater to the body's energy and health requirements, important nutrients like fats, minerals, vitamins, carbohydrates and proteins are absorbed in the jejunum and ileum. Villi, tiny finger-like projections line the small intestine, giving additional surface area and thus, better food absorption.Learn more about Organs
The heart is an organ that is comprised mostly of muscle. It is a small organ that is located behind the sternum and situated on the left side of the human chest.Full Answer >
Intestinal villi are small, finger-like projections that protrude from the walls of the small intestine. The villi increase the absorptive surface of the intestine and ensure efficient absorption of nutrients. The villi have microvilli projecting from their outer epithelial walls.Full Answer >
According to MedlinePlus, the stomach is connected to the first part of the small intestine, which is called the duodenum. Food mixes with stomach acid and moves to the duodenum, where bile is mixed in from the gallbladder and digestive juices come from the pancreas.Full Answer >
The pH in the small intestine increases from pH 6 in the duodenum to pH 7.4 at the distal end of the small intestine in the terminal ileum. The pH decreases to pH 5.7 in the cecum but increases to pH 6.7 in the rectum.Full Answer >