Question

what is peristalsis?

Answer 1

Continuous contraction and relaxation of food pipe in order to push food down. When food enters the food pipe it undergo peristalitic movements to push the food in the stomach. And the food enters the stomach with the help of sphincter muscle.

Answer 2

Answer :-

The food bolus moves in the alimentary canal by a wave of relaxation followed by a wave of contraction. This movement of muscles is termed as "Peristalsis".

Extra Information :-

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• The phenomenon of Peristalsis is also known as "Propulsive peristalsis".

• Peristalsis is an involuntary process in which refers to the rhythmic relaxation and contraction of muscles in the alimentary canal.

• Peristalsis usually occurs in the Oesophagus (food pipe), the Stomach, in the Small intestine, in the Large intestine and in the Rectum.

• The rate of peristalsis in the Rectum, is the least.

• Peristalsis is a part of "Mechanical digestion".

• Stimulation of the Parasympathetic nervous system leads to the increase in the rate of peristalsis in the gut.

• Reverse peristalsis results in vomiting.