
Where in the alimentary canal does propulsion occur?

To review:
The propulsion site in the alimentary canal.
Introduction:
Alimentary canal is a part of the digestive system of the human body. It is a passage starting from the mouth and ends at the anus. It is also known as the gastrointestinal tract. The mouth, pharynx, esophagus, stomach, small intestine, and large intestine which lead to the anus are organs of the alimentary canal.
Explanation of Solution
The process through which the movement of food along the alimentary canal occurs is known as propulsion. The propulsion occurs throughout the alimentary canal. It is initiated by a voluntary movement and gets continued by an involuntary movement. The involuntary movement initiating propulsion is the swallowing of food and the movement continuing propulsion is peristalsis.
Peristalsis is the process in which smooth muscles lining the walls of the organs of the alimentary canal contract and relax in an alternative manner. This enables the movement of food from one part of the alimentary canal to another. The mixing of food with digestive enzymes also takes place due to propulsion.
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Human Anatomy
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