All organs, tissue, and cells of the human body need nutrients to live and grow. Providing nutrients to the body is the function of the digestive system. The digestive system is a series of tubes and organs connecting from the mouth at one end, to the anus at the other end. The main parts of the digestive system are the mouth, esophagus, stomach, small intestine, large intestine or colon, rectum, and anus. The digestive system is responsible for breaking down food, absorbing the nutrients, and removing the waste. Read on to learn more about the digestive system, and its role in your body. A variety of digestive enzymes are used throughout the digestive system. These enzymes are responsible for breaking down food so that nutrients can be absorbed and used by the body. Read on to learn more about the digestion and digestive enzymes.