The digestive tract is also known as:

The alimentary canal refers to the digestive tract from the mouth to the anus involved in ingestion, digestion, absorption, and egestion of food. It includes the mouth, food pipe, stomach, and intestines. It is home to the entire process of digestion. The oesophagus is the food pipe, a part of the alimentary canal, and the pharynx is a part of the throat above the oesophagus. The central canal is the narrow canal in the spinal cord filled with cerebrospinal fluid. It is a continuation of the brain cavity acting as a cushion that prevents sudden shocks to the organs around it, including the human heart.