Organs of the digestive system fall into two groups which are the alimentary canal and accessory digestive organs. The alimentary canal is a muscular tube that digest food from mouth to anus. These organs include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The accessory digestive organs are the teeth, tongue, gallbladder, and a number of large digestive glands- the salivary glands, liver, and pancreas.