<prompt> All the following causes the secretion of gastric juice during cephalic phase EXCEPTFood in the mouthSight of foodFood in the stomachThought of food  <response>: Secretion of gastric juice occurs in 3 phases- cephalic, gastric and intestinal.a Cephalic phase only nervousThe secretion of gastric juice by stimuli arising from head region Sight, smell, thought and hearing about food is called cephalic phase.The gastric secretion occurs even without presence of food in stomach. The gastric juice secreted during this phase is called appetite juice.Taste food in mouth Stimulation of vagusSecretion of gastric juiceb Gastric phase Nervous and hormonal The secretion of gastric juice when food enters the stomach is called gastric phase.Bolus in stomach Vagus, Local nerves, Gastrin Stimulation Secretion of gastric juicec Intestinal phase HormonalIntestinal phase is period of secretion of gastric juice when the chyme enters the intestine. 