The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.

VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.