through what opening does the esophagus enter the abdominal cavity
Vomiting is a vital reflex controlled by the medulla oblongata LES relaxes-allowing stomach contents to move into the esophagus Diaphragm and abdominal muscles contract-squeezing the stomach & forcing contents upwards. î î î. Esophagus enters the abdominal cavity through an opening in the diaphragm.This opening becomes enlarged, stomach is pushed up into the thoracic cavity. Additional pressure causes the LES to relax. Stomach contents enter the esophagus Causes Heartburn Condition called GERD (gastro-esophageal reflux disease).omiting is a vital reflex controlled by the medulla oblongata LES relaxes-allowing stomach contents to move into the esophagus Diaphragm and abdominal muscles contract-squeezing the stomach & forcing contents upwards. î î î. Esophagus enters the abdominal cavity through an opening in the diaphragm.