f gastric juice on the B. esophagus ??? ??? ??? The main part of the stomach is called the A. fundus ??? ??? ??? The parietal cells gastric glands secrete C. hydrochloric acid ??? ??? ??? All of the enzymes that digest protein are A. secreted by the pancreas ??? ??? ??? Gastrin, which stomach cells secrete B. increases secretion by the gastric glands ??? ??? ??? Secretion of cholecystokinin from t