The contraction of smooth muscles of the walls of the esophagus that allows movement of food toward the stomach is known as which of the following?

Deglutition refers to the act of swallowing, which involves the voluntary and reflexive actions necessary for moving food from the mouth to the esophagus. While it is related to the process of food movement, it does not describe the muscular contractions that transport food down the esophagus.

Dysphagia is a medical term used to describe difficulty in swallowing. This condition may result from various disorders affecting the esophagus or swallowing mechanism, but it does not pertain to the normal contraction process that moves food toward the stomach.

Eructation, commonly known as belching, refers to the release of gas from the digestive tract through the mouth. It is not related to the movement of food within the esophagus and has no connection to the contraction of smooth muscles that facilitate peristalsis.

Mastication is the process of chewing food in the mouth, breaking it down into smaller pieces for easier swallowing and digestion. While it is an important initial step in digestion, it does not involve the smooth muscle contractions of the esophagus that are characteristic of peristalsis.