alleryStart learning →Gastrin is released mainly by enteroendocrine G cells located in which region of the stomach mucosa?
AThe fundus only
BThe pyloric antrum
CThe cardia only
DThe lesser curvature exclusively
Answer & Solution
Correct answer: B. The pyloric antrum
1. Enteroendocrine cells within the gastric glands secrete several hormones into the lamina propria.
2. Among these, gastrin is released mainly by enteroendocrine G cells.
3. The hormone table identifies the pyloric antrum as the production site listed for gastrin's G cells.
4. The fundus alone, the cardia alone, and the lesser curvature exclusively are not the specific site identified for gastrin-producing G cells.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.4, p. 1110_
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