The mouth breaks down food and uses saliva to break down food. Pools break down germs.

The throat/esophagus carries food down to the stomach, using peristalsis. Slides carry down people.

The stomach is very hot because of the internal body temperature and hot tubs are very hot. The stomach also makes the food into mush. A hot tub makes people prune like. The stomach uses chemical and mechanical digestion.

The small intestines sucks all of the nutrients out, with the help of villi, the liver, the gallbladder, and the pancreas. A water vacuum sucks things too.

The large intestine takes all of the water out. A drain takes out water from a sink or a shower.

The rectum hold the digested food until it is ready to leave to body. A storage closet holds the supplies until they are ready to be used.