Digestive System of the Lower Torso

The digestive system of the lower abdomen (including the pelvis) is also called the lower gastrointestinal tract. This is the organ system that completes the breakdown of the food a person eats. It causes the absorption of nutrients from that food into the bloodstream for distribution throughout the body. It also excretes indigestible waste products from the food and from the process of digestion itself.

The organs located within the lower gastrointestinal tract include the small...

Anatomy Explorer

Full Digestive System of the Lower Torso Description

[Continued from above] . . . intestine. This organ has three parts: the duodenum (part of this organ extends into the upper gastrointestinal tract); the jejunum, which is the intestine's midsection; and the ileum. The digestive system of the lower abdomen also houses the large intestine, which has three parts: the cecum (attached to the cecum is the vermiform appendix); the colon, which is critical in the absorption of water and the production of vitamin K; and the rectum. The final organ within the lower gastrointestinal tract is the anus.