The secretion of gastric juice, strengthening of contractions of the lower esophageal sphincter, increased motility of the stomach and relaxation of the pyloric sphincter are stimulated by gastrin. It is a hormone.
A hormone is a chemical messenger produced and secreted by the body tissues in order to play specific roles.
Gastrin is a protein (peptidic) hormone associated with the secretion of gastric acid in the digestive system.
This peptidic hormone (gastrin) is fundamental for the normal functioning of the digestive system.
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