The digestive system is the series of tubelike organs that ... The resulting semifluid paste—chyme—is sealed in the stomach by two ringlike sphincter muscles for several hours and then ...

There are two primary parts of the digestive system: The GI (gastrointestinal) tract, through which food passes and is broken down. The biliary tract produces juices such as bile and enzymes to ...

This article also explains the functions of other parts of the digestive system. The mouth is the beginning ... its surface called papillae, which have two different functions.

Save guides, add subjects and pick up where you left off with your BBC account. The digestive system is like a big food factory inside our bodies. Its job is to break down the food we eat into ...