Final answer:
The two types of contractions that are undergone by the haustra in the large intestine are mass movements and segmentation. Mass movements are strong waves that quickly force the contents toward the rectum, while segmentation involves slow-moving haustral contractions that mix food residue.
Step-by-step explanation:
The two types of contractions that are undergone by the haustra in the large intestine are mass movements and segmentation.
Mass movements are strong waves that start midway through the transverse colon and quickly force the contents toward the rectum. Mass movements usually occur three or four times per day, either while you eat or immediately afterward. This movement is responsible for the elimination of feces from the body.
Segmentation is a slow-moving haustral contraction that involves sluggish segmentation, primarily in the transverse and descending colons. It helps mix the food residue, which aids in the absorption of water in the large intestine.