the parts of the body that break down food into small particles, allowing nutrients from food to be used for energy and growth: the mouth, esophagus, stomach, pancreas, liver, gallbladder, small intestine, and large intestine.
The tube that extends from the mouth to the anus in which the movement of muscles and release of hormones and enzymes digest food. The gastrointestinal tract starts with the mouth and proceeds to the esophagus, stomach, duodenum, small intestine, large intestine (colon), rectum and, finally, the anus. It is also called the alimentary canal, digestive tract and, perhaps most often in conversation, the GI tract.
the group of organs involved in the digestion of food, including the extraction of nutrients and the elimination of waste products. These organs include the esophagus, stomach, and small and large intestines. The liver, gallbladder, and pancreas are often considered part of the GI tract as well.
The gastrointestinal tract (GI tract), also called the digestive tract, alimentary canal, or gut, is the system of organs within multicellular animals that takes in food, digests it to extract energy and nutrients, and expels the remaining waste. The major functions of the GI tract are digestion and excretion.