what prevents the churned food in the stomach from moving back into the esophagus?

Question

what causes churned food in the stomach from moving back into the esophagus?

Answer 1

The Esophageal Sphincter---this is basically a "one way valve" that helps kep your food from being regurgitated back up into the esophagus. If this becomes herniated or stretched, this is called Hiatal Hernia and its effects are chronic indigestion which can lead to ulcerating the esophagus.
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Answer 2

There is a sphincter between the stomach and esophagus. It only opens to receive food (and occasionally send back what it doesn't like!). A sphincter is: a circular band of voluntary or involuntary muscle that encircles an orifice of the body or one of its hollow organs.

Answer 3

A little sphincter muscle called the esophageal. A Sphincter muscle is round and contracts or expands in a circle.

Answer 4

There is a valve at the bottom of the esophagus. If this valve is damaged or becomes weak, you get acid reflux, which can damage the esophagus.

Answer 5

The Cardio-Esophageal sphincter.

Answer 6

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Answer 7

There is a flap at the bottom of the esphagus. If yours does not close properly, stomach acid can leak into your esphagus and cause acid reflux.

Answer 8

The esophageal sphincter.