Question

complete the sentence using one of the following terms: digestion, peristalsis, swallowing. food is moved through the gi tract through, a rapid, involuntary contraction of the smooth - muscle layers covering the gi tract.

Explanation:

Peristalsis is the rapid, involuntary contraction of smooth - muscle layers in the GI tract that moves food through it. Digestion is the process of breaking down food, and swallowing is the act of moving food from the mouth to the esophagus.

Answer:

peristalsis