If Peristalsis in the Esophagus Is Insufficient to Carry a Large

Multiple Choice

If peristalsis in the esophagus is insufficient to carry a large bolus to the stomach,

A) a secondary peristaltic wave is initiated by the swallowing center
B) a secondary peristaltic wave is initiated and, mediated by the intrinsic nerve plexuses
C) the food remains in the esophagus until voluntary swallowing is initiated again
D) increased esophageal secretion lubricates the bolus so that it can slide to the stomach
E) food never becomes stuck because the esophagus is very distensible