A 50-year-old male is experiencing reflux of chyme from the stomach. He is diagnosed with gastroesophageal reflux. This condition is caused by:
A) fibrosis of the lower third of the esophagus.
B) sympathetic nerve stimulation.
C) loss of muscle tone at the lower esophageal sphincter.
D) reverse peristalsis of the stomach.

Question

Quizplus · Accepted Answer

Gastroesophageal reflux is caused by the relaxation or loss of muscle tone at the lower esophageal sphincter, allowing chyme to flow back into the esophagus. Fibrosis of the esophagus, sympathetic nerve stimulation, and reverse peristalsis of the stomach are not typically associated with this condition.

A 50-Year-Old Male Is Experiencing Reflux of Chyme from the Stomach