Question

The contraction and expansion movement of the walls of the food pipe is called??

Answer 1

Answer:

peristaltic movement

Answer 2

Answer:

Peristalsis Is the Contraction of Muscle Tissue That Helps Move and Break Down Foodstuffs. The walls of the alimentary canal include layers of smooth muscle controlled by the autonomic nervous system. Alternating contraction and relaxation of these muscles is called peristalsis.