what is peristalsis??
Answers
Explanation:
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.
In much of a digestive tract such as the human gastrointestinal tract, smooth muscle tissue contracts in sequence to produce a peristaltic wave, which propels a ball of food (called a bolus before being transformed into chyme in the stomach) along the tract. Peristaltic movement comprises relaxation of circular smooth muscles, then their contraction behind the chewed material to keep it from moving backward, then longitudinal contraction to push it forward.
Earthworms use a similar mechanism to drive their locomotion,and some modern machinery imitates this design.
The word comes from New Latin and is derived from the Greek peristellein, "to wrap around," from peri-, "around" + stellein, "draw in, bring together; set in order".
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Answer:
Peristalsis Definition
“Peristalsis is a series of wave-like contractions of the muscles that are involved in the food movement and in the movement of other liquid particles in the digestive tract to various processing organs that are located in the digestive system.”
What is Peristalsis?
The peristaltic movement also called as the Peristalsis refers to the contraction and relaxation of the food in the oesophagus and the food pipe and the food is forced down the track to the stomach. This movement is involuntary and is necessary for the movement of food down the stomach and bowels down the anus.
The peristaltic movement is initiated from the oesophagus when the food is completely swallowed which includes the reflexive action of the longitudinal and circular muscles greatly in the digestive sites and some other times in hollow tubes that are present in progressive wave-like contractions.
Peristalsis occurs in the oesophagus, intestines, and stomach and the waves could be long, short, continuous or continual that transit within the complete length of the organs, basis their location.
Explanation:
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