10. Food enters in to the stomach through the peristaltic movement. Justify.
Answers
Answer:
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.
Answer:
Peristalsis is the rhythmic motion of smooth muscles in the intestine or other tubular organs characterized by the alternate contraction and relaxation of the smooth muscles that propel the contents onward. Peristalsis is also described as a wavelike ring of contraction that moves material along the digestive tract or the alimentary canal. In peristalsis, a ring of contraction occurs in the wall of the tube. At the same time, the muscular wall just ahead of the ring relaxes. As the peristaltic wave moves along the tube, it pushes the tubular contents ahead of it (see in given Figure). Generally, in peristalsis, the area ahead of the contents is relaxed, and the area behind the contents is undergoing peristaltic contraction which allows for the contents to be propelled forward. 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 while in the oesophagus and upper gastrointestinal tract and 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.
