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Burping - Homeostasis

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Tiffany Doe

on 4 January 2013

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Transcript of Burping - Homeostasis

BURPING Stimulus inflated stomach caused by excess of swallowed air and gases or build-up of gas caused by normal digestive processes Receptor as gas builds up, the stomach stretches and senses an increase in pressure
the stomach walls can tell how full your stomach is (knows what to churn) and when there is too much gas, the walls will signal the cardiac sphincter to relax Effector lower esophageal sphincter (cardiac) relaxes, which is how the air will be released into the esophagus and out through the mouth
larynx is closed off so that nothing gets into the lungs (raises when you swallow)
diaphragm descends (like when a breath is taken)
pressure in abdomen increases, pressure in chest decreases
these changes in pressure promote flow of air from the stomach, through the esophagus in the chest Response the previous excess gas in the stomach goes up the esophagus and is released through the mouth - negative feedback
mixture of nitrogen/oxygen/carbon dioxide
there is a vibration in the esophagus as the air passes, which is what causes the sound of burping can be because of carbonated beverages (CO2) or
by drinking/eating too fast; repeated belching is usually caused by unconcious swallowing of air (aerophagia) slight abdominal discomfort
extra gas in the stomach that is not needed
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