http://wiki.answers.com/FAQ/6462excretory
the digestive system
The mouth is a vital part in the digestive system. A balanced diet aids a healthy digestive system.
digest the food
False
The digestive system breaks down food that you eat. As it moves through the digestive system, the nutrients in the foods (ex. proteins, vitamins, etc.)are taken out and the rest is excreted. The digestive system gives you your energy and your nutrients. Without it, the food that you eat wouldn't be put to use. If you don't have a good, healthy digestive system, your digestive organs will not function as well and you will not receive all of the nutrients possible.
The digestive system is responsible for breaking down food into smaller molecules that can be absorbed by the body. This process occurs in the stomach and intestines, where nutrients are absorbed into the bloodstream for use by the body.
The digestive system converts food into nutrients. Breaking it down with enzymes and other chemicals. It turns it into nutrients and fat (Fat is to be stored for later use to provide energy).
The digestive system breaks food down into useful nutrients.
Food isn't transformed into energy directly in the digestive system, except in its individual cells. However, the digestive system turns food into usable nutrients, which each cell may then use for energy, among other processes.
The purpose of the digestive system is to break down food to make it absorbable into the bloodstream.
The digestive system is what converts regular food that we eat into useful form of nutrients which can be used by the rest of the body. Without these nutrients, the other organs would eventually shut down and die. The body does have the capability to convert energy from fat cells for use in the rest of the body. I'm not sure if this is a function of the digestive system, though.