Final answer:
a. small intestine Segmentation occurs in the small intestine where it aids in mixing chyme with digestive juices and facilitates absorption by pushing food particles against the mucosa.
Step-by-step explanation:
The process of segmentation primarily occurs in the small intestine. This mechanical digestive process involves the contraction and relaxation of non-adjacent segments of the intestine, which mixes the chyme with digestive juices and enhances its contact with the intestinal wall for absorption. Segmentation occurs at different rates along the small intestine, being most rapid in the duodenum at about 12 times per minute, and slower in the ileum, approximately 8 times per minute.
Segmentation is a process that occurs in the small intestine of the digestive system. It involves the contraction and relaxation of rings of smooth muscle in the small intestine, which shoves the contents incrementally back and forth. Segmentation combines the chyme (partially digested food) with digestive juices and pushes food particles against the mucosa for absorption