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The pressure exerted by food on what valve causes it to open so that food can enter the stomach?
Wiki User
∙ 13y ago
The lower esophageal sphincter.
Actually it is triggered to relax by the nervous system as part of the swallowing reflex so the question is a bit overly simplistic if not just wrong.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThe pyloric valve between the stomach and the small intestine.
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