The Cure for all Diseases

a. Valve at the end of the esophagus keeps acidic stomach contents from coming back up the throat. b. Esophageal reflux: Valve only partially closes or opens too much. i. Symptoms include: (a) Burning sensation in the chest (b) Indigestion (c) Change in voice tone. ii. Can cause a precancerous condition. B. Anatomy and physiology of the throat. 1. ................
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