The mouth is at the beginning of the alimentary canal (digestive tract). The teeth in the mouth cut, tear and grind food and the salivary glands add mucous to moisten the food plus there are also some enzymes that are made in the mouth that start digestion.
A series of muscular contractions, which squeeze the alimentary canal, called peristalsis, are what moves food all the way through the alimentary canal, from beginning to end.
mouth (oesophagus)
For food to properly pass through the alimentary canal, digestion must first occur. The process of moving food through the alimentary canal is called propulsion.
Alimentary canal.
Think of the alimentary canal as being a tube that carries and processes food. The liver processes/cleans blood and stores energy, and is not directly associated with the processing of food...therefore not part of the alimentary canal.
colon
The muscular movement of the intestinal canal is called peristalsis.
In alimentary canal from throat to stomach.
stomach
Through the mouth
The digestive tract is called alimentary canal because its parts form a long tube through which we absorb the nutrition in our food. The word "alimentary" comes from the Latin word for nourishment, alimentum.