Digestion is the process by which food and liquid are broken down into smaller parts so that the body can use them to build and nourish cells, and to provide energy. The digestive system is one of the vital systems of the body. This system enables the body to get the proteins it needs from food in order to keep the body healthy. The system also gets rid of wastes. The digestive system is uniquely …showed first 75 words of 979 total…

…showed last 75 words of 979 total…supposed to. The anal sphincters provide fine control of stool. The internal sphincter is always tight, except when stool enters the rectum. It keeps us from going to the bathroom when we are asleep, or otherwise unaware of the presence of stool. When we get an urge to go to the bathroom, we rely on our external sphincter to keep the stool in until we can get to the bathroom, which ends the digestion process.