The digestive system begins with the mouth, which breaks food into pieces through biting. The esophagus then transports food to the stomach, which processes and holds food as it is broken down by enzymes. The small intestine is responsible for absorbing nutrients from food into the bloodstream and passing waste to the large intestine, which collects and processes undigested matter into feces. The pancreas, liver, and other organs aid in digestion by producing enzymes and filtering waste products from the blood.