Relaxation of the lower esophageal sphincter during swallowing
A) Is part of the swallowing program
B) Requires stretch of the esophagus
C) Requires an intact vagus nerve
D) Is a local response to stretch of the sphincter
E) Especially requires relaxation of the longitudinal muscle layer

Question

Quizplus · Accepted Answer

Relaxation of the lower esophageal sphincter during swallowing is coordinated as part of the swallowing reflex, which is a programmed response involving the central nervous system.

Relaxation of the Lower Esophageal Sphincter During Swallowing