The digestive system of the human body is the sum of the gastrointestinal tract (GIT; also called alimentary canal) and accessory organs (tongue, liver, pancreas, etc.). These two parts together help in the digestion process. The alimentary canal is the long tube through which the food that we eat is passed.
The digestive tract forms one long tube through the body, all the way from the mouth to the anus (with some sphincters between organs to keep things moving in the right direction). The organs in the digestive system, in the order in which food travels through them, are: Mouth.
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 functions take place in the digestive system: