Chapter 22, Problem 42CYU

Summary Introduction

To review:

The process which is more important in the food movement along the small intestine, among the peristalsis and segmentation.

Introduction:

Peristalsis and segmentation both plays an important role in the movement of food along the digestive tract. Peristalsis is described as radially symmetrical contraction and relaxation of the muscles that produces a peristaltic wave. This peristaltic wave propel the bolus (ball of food) in oesophagus and upper digestive tract including stomach. Whereas the process of segmentation is accompained by the contraction of circular smooth muscles in back and forth direction to break and mix the food for the further movement.