Esophagus & Stomach. By Claire Allen, Christie Batt and Em Layton. ESOPHAGUS. Aka foodpipe Around 25cm long Composed of a series of layers- including circular and longitudinal muscles Peristalsis enables bolus to be propelled towards the stomach.
By Claire Allen, Christie Batt and Em Layton
Circular muscles contract behind the bolus and relax in front of it- so that it is pushed along. These are often referred to as wave-like contractions due to the circular shape of the muscle fibres and the way they contract. The longitudinal muscles contract to shorten the section of the esophagus with the bolus present- this speeds up the time taken to the stomach. Food moves along the esophagus at a rate of around 4cm per second and takes around 6 seconds to travel from the mouth to the stomach in total.