Summary: How is Heartburn Related to Biology and Chemistry?
Heartburn is related to biology because it is resulted by a simple biological organ defunct in the upper digestive system, particularly in the lower esophageal sphincter (LES). It occurs because it is not closed tightly enough, allowing back flow of stomach enzymes. Heartburn is related to chemistry because the symptoms are caused by the stomach acids (HCl). The low pH of stomach acid (pH of 1.5 - 3.5), causes irritation or burning of the unprotected lining of the esophagus. In addition, the treatment of heartburn also relates to chemistry because it demonstrates a neutralization reaction. The H+ ions of stomach acid chemically bonds (covalent) to the OH- of the antacids, neutralizing the acid by forming the product, H2O (pH of 7).
Heartburn may signal a chronic condition, gastroesophageal reflux disease, or GERD - Washington Post. (n.d.). Featured Articles From The Washington Post. Retrieved May 24, 2013, from http://articles.washingtonpost.com/2012-08-27/national/35491546_1_frequent-heartburn-reflux-lower-esophageal-sphincter
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Lesson 7: Acids and Bases. (n.d.).Water/Wastewater Distance Learning at Mountain Empire Community College. Retrieved May 24, 2013, from http://water.me.vccs.edu/courses/env211/lesson7_2.htm
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