The unidirectional muscular movement of a bolus through the esophagus toward the stomach is known as

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Peristalsis is the process by which the muscles of the esophagus contract in a coordinated manner to propel a bolus of food or liquid towards the stomach. Mononucleosis is a viral infection, metastasis is the spread of cancer cells to other parts of the body, and phagocytosis is the process by which cells engulf and digest particles or foreign substances. None of these processes are involved in the movement of food through the esophagus.

The Unidirectional Muscular Movement of a Bolus Through the Esophagus