• Gastrointestinal (GI) tract: This is the main tube that food travels through. It includes the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus. • Accessory organs: These organs assist in the digestive process. They include the salivary glands, liver, gallbladder, and pancreas. [1, 1, 3,