The digestive system is a group of organs working and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canel or the gastrointestinal tract. The alimentary canel is made up of the oral cavity, pharynx, esophagus, stomach, small intestine, and large intestine. In addition to the alimentary camel,there are several important accessory organs that help your body to digest food.. But do not have food pass through them. Accessory organs of the digestive system include the teeth,tongue, salivary glands, liver, gallbladder, and pancreas. To achieve the goal of providing energy and nutrients to the body,six major function take place in digestive system.