Question

The bolus of food moves through the esophagus by involuntary muscular contraction called.

Answer 1

- Peristalsis.

Step-by-step explanation:

- Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.

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