The major organs of the digestive system include the stomach, small intestine, large intestine, liver, gallbladder, and pancreas. The stomach absorbs food and churns it into a consistency easier for the intestines to digest. The small intestine, only 1 inch in diameter, absorbs about 90% of nutrients. The large intestine absorbs water and vitamins while converting digested food into feces, measuring around 5 feet. Both the liver and pancreas perform vital functions, with the liver storing nutrients and maintaining tissues, and the pancreas excreting enzymes to break down nutrients in food.