Learn about the process of digestion and understand the importance of enzymes in the digestive system. View examples of enzymes that help with the digestion process.

What are Villi? The small intestine is the longest part of the digestive system. This almost twenty-foot-long structure is divided into three sections called the duodenum, ileum, and jejunum.

Discover how the human digestive system, one of the most important systems in the human body, works. Learn what each part does, and then see how much you remember with a quick quiz.

Chyme is a semifluid mixture made of partially digested food and digestive juices. As chyme moves through the digestive system, nutrients and water are extracted to provide the body …

For example, the digestive system of a mollusk consists of a mouth and a stomach, while the excretory system is defined by the kidney (nephridia), anus, and excurrent siphon.

Learn how the digestive system works in this educational video lesson for kids. Explore how food travels through the body, and test your knowledge with a quiz.

What is the digestive system? The digestive system is a system of many different organs working in conjunction to absorb nutrients and dispose of waste. In healthy individuals, the digestive ...

Lower GI Tract Anatomy What is the GI tract? The lower gastrointestinal tract or lower GI is a part of the digestive system composed of most of the small intestine, the large intestine, and the anus.

Learn the definition of gastrointestinal system and gastrointestinal hormones. Discover how gastrin and other digestive hormones are secreted and function.

The Digestive System Before nutrients can be transported around your body, the food you eat needs to be broken down into a more transportable size.