MITCHELL, S.D. — Swallowing is a complex process. Using roughly 30 pairs of muscles working in perfect coordination, a person will swallow around 600 times each day, often without noticing. Yet ...
Animation of a modified barium swallow study, from Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Normal_barium_swallow_animation.gif Disclaimer: AAAS and ...
Fluoroscopy shows that on swallowing, the barium column moves down the esophagus. Such barium movement occurs largely due to passive forces in the esophagus and is very marked in the upright position.
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