The digestive system is a group of organs responsible for breaking down food, absorbing nutrients, and eliminating waste from the body. It starts with the mouth, where food is chewed and mixed with saliva. The food then travels down the esophagus into the stomach, where it is mixed with digestive enzymes and acids. From there, it moves into the small intestine, where most nutrient absorption occurs, before entering the large intestine, which absorbs water and forms waste. The waste is then expelled through the rectum and anus. The digestive system also involves accessory organs such as the liver, pancreas, and gallbladder, which aid in digestion through the secretion of enzymes and bile.