University of Central Florida (UCF) ZOO3733C Human Anatomy Practice Test 4

D Cells in the stomach are responsible for producing somatostatin, a peptide hormone that plays a crucial role in regulating several functions within the gastrointestinal system. Somatostatin acts as an inhibitory hormone, helping to regulate the secretion of other hormones and gastric juices.

In the context of the stomach, somatostatin inhibits the release of gastrin, which is involved in stimulating the production of gastric acid (HCl) and pepsinogen from other gastric cells. By inhibiting gastrin secretion, somatostatin helps maintain the balance of gastric acidity and prevents excessive gastric secretion, playing a significant role in digestive processes. This regulatory mechanism is vital for ensuring that the stomach operates effectively and prevents damage from hyperacidity.

Understanding the role of D Cells and their product, somatostatin, is essential for grasping how hormonal regulation in the gastrointestinal tract influences digestion and overall stomach health.