Reflux: Acid reflux is defined as the presence of acidic gastric contents in the esophagus causing irritation. It's cause is blamed on the a lax gastroesophageal shpincter that permits usch regurgitation. Vesicoureteral reflux is regurgitation (backing up) of urine in the bladder into the ureter through the vesicoureteral junction.
Answered 12/2/2016
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