The digestive system is made up of the digestive tract, which is a series of hollow organs joined in a long, twisting tube from the mouth to the anus. Â The digestive tract also includes other organs that help the body break down and absorb food.
Organs that make up the digestive tract are:
Inside these hollow organs is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. The digestive tract also contains a layer of smooth muscle that helps break down food and move it along the tract.