Final answer:
Enteroendocrine cells in the stomach are located in the gastric glands of the mucosa, where they secrete hormones like gastrin that stimulate digestion.
Step-by-step explanation:
Enteroendocrine cells are specialized cells located in the lining of the gastrointestinal tract. In the stomach, these cells are found within the gastric glands of the mucosa. They play a critical role in the digestive process by secreting various hormones, including gastrin, into the interstitial fluid of the lamina propria. Gastrin, principally released by enteroendocrine G cells, stimulates the production of gastric acid by parietal cells. This acid is essential for activating pepsinogen into pepsin and helps in breaking down proteins in the food we eat. Other hormones secreted by enteroendocrine cells have different functions, such as regulating the release of bile and pancreatic enzymes, which further aid in digestion.