Title: Jejunum's Function in the Small Intestine and Digestive System:
Headings: Anatomy and Function of the Digestive System
Anatomy and Function of the Digestive System
Mouth
Esophagus
Stomach
Small Intestine
Duodenum
Jejunum Function
Ileum
Large Intestine
Accessory Digestive Organs and Glands
Salivary Glands
Pancreas
Liver
Gallbladder
Digestive System Problems and Diseases
Diarrhea
Diverticular Disease
Gastroenteritis
Heartburn
Gas in the Digestive Tract
Hepatitis
Inflammatory bowel diseases
Ulcerative colitis
Crohn’s Disease
Irritable Bowel Syndrome
Lactose intolerance
Peptic Ulcers
Cancers

Content: The rest of the food is passed into the jejunum. Jejunum Function
The second (middle) section of the small intestine is a coiled tube which is thicker and more vascular than the ileum. It lies in the belly button area of the abdomen. There are small fingerlike projections in the wall of the jejunum called villi. These villi are covered with smaller projections called microvilli. The villi increase the surface area of the jejunum and allows much more absorption of nutrients in this part of the small intestine—most of the food absorption is done in this part of the digestive tract. Simple sugars, water soluble vitamins (except vitamin C and some Bs) and amino acids made from the food is passed from the villi into the blood stream while the fat is passed into the lymph capillaries. The rest of the food passes into the ileum. Ileum
The last part of the small intestine is mainly the pelvic region. It looks very similar to the jejunum.