No.
Cardio- = heart
Gastro- = stomach
Esophageal = of or pertaining to the esophagus
Edit-
Yes.
The Lower Esophageal Sphincter (LES) is also referred to as the Cardioesophageal Sphincter and the Gastroesophageal Sphincter. This sphincter separates the esophagus from the stomach and is usually in a closed position. When there is weakness in the sphincter gastric juices may go up into the esophagus resulting in heartburn.
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