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Lowell Jackson ThomasLowell Thomas
Lower
lower berth
lower bound
Lower California
lower cannon
Lower Carboniferous
Lower Carboniferous period
lower case
lower class
lower court
lower criticism
lower deck
Lower Egypt
Lower Esophageal Ring
-- Lower Esophageal Sphincter --
Lower GI Series
lower jaw
lower jawbone
Lower Layer Protocol
lower limit
lower mantle
lower oneself
Lower Paleolithic
Lower Peninsula
lower rank
lower respiratory infection
lower respiratory tract
lower respiratory tract smear
Lower Saxony
lower set
lower status
Lower Esophageal Sphincter
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| Pronunciation: (LOH-wur uh-saw-fuh-JEE-ul SFEENK-tur) The muscle between the esophagus and stomach. When a person swallows, this muscle relaxes to let food pass from the esophagus to the stomach. It stays closed at other times to keep stomach contents from flowing back into the esophagus. |  |