Which type of movement in the GI system is primarily responsible for moving chyme back and forth, mixing it with digestive juices and promoting the absorption of nutrients?
A)segmentation
B)peristalsis
C)swallowing
D)defecation

Question

Quizplus · Accepted Answer

Segmentation is the type of movement in the gastrointestinal (GI) system that is primarily responsible for moving chyme back and forth. This action mixes the chyme with digestive juices, thereby promoting the absorption of nutrients. Unlike peristalsis, which propels food along the digestive tract, segmentation's main role is to enhance nutrient absorption by maximizing the contact of chyme with the intestinal walls.

Which Type of Movement in the GI System Is Primarily