Q. The hormone gastrin is secreted by __.
Solution:
- Gastrin is a hormone that is produced and released by certain cells in the stomach, known as G cells, which are primarily located in the antrum of the stomach.
- Gastrin plays a key role in the regulation of gastric acid secretion and the digestive process.
- Gastrin stimulates the parietal cells in the lining of the stomach to produce and release gastric acid (hydrochloric acid). This acid is essential for the digestion of food, especially proteins.
- Gastrin also stimulates the production of pepsinogen, an inactive precursor of pepsin, an enzyme that breaks down proteins into smaller peptides.
- Gastrin can influence the rate at which the stomach empties its contents into the small intestine.
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