Explain the gastric phase - secretion of gastric juice, Science

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Explain the Gastric Phase - Mechanism of Secretion of Gastric Juice

Another 45% of the gastric secretion is discharged in this phase. The mechanical presence of food in the antrum of the stomach stimulates the production of a hormone, gastrin. Gastrin is secreted from the G cells of the antral mucosa and passes directly into the circulating blood. This hormone activates the parietal cells of the stomach to secrete more gastric juice. This gastric juice contains more acid, but little pepsin or mucus.


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