An introduction to the amazing functions of the human body's digestive system.

The human digestive system refers to the organs that take in food and break them down. Digestion describes the complex process that enables the nutrients in food to enter the body and its cells.

New research finds there is significant variation in the anatomy of the human digestive system, with pronounced differences possible between healthy individuals. The finding has implications for ...

So Vision must have some kind of nervous system with pain receptors. But he may lack a circulatory system, which is crucial in the human body for distributing nutrients to cells.