Question

Muscular contractions called ______ involve alternating ring-like constrictions at several places along the intestine.

1) Peristalsis
2) Segmentation
3) Haustral contractions
4) Mass movements

Answer 1

Peristalsis is the muscular contractions in the intestine that move food through the GI tract.

Step-by-step explanation:

The muscular contractions called peristalsis involve alternating ring-like constrictions at several places along the intestine. Peristalsis is a continuous sequence of involuntary muscle contraction and relaxation that moves food through the GI tract. It propels food through the tract and helps mix the contents with digestive juices.