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Human Anatomy and Physiology

What makes the burping noise when you burp?

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April 25, 2010 2:38AM

The burping noise is caused by air rushing past the loose tissue of the upper esophagus, the tube that leads from the throat to the stomach. It is usually closed when you are breathing, and opens when you swallow. So when air from your stomach rushes up real fast, it vibrates the upper part of the tube. The same thing happens to a whoopie cushion when the air is squeezed out of it; the loose end makes a farting sound. You could think of burping as being the opposite of farting, because the same principles of creating sound are at work for both.

you can also make one on purpose simply by inhailing with esophagus closed but open 1%