The cells in the small intestine’s mucosa that secrete mucus are called goblet cells. These specialized epithelial cells are interspersed among the other cells lining the intestinal epithelium.
Goblet cells play a critical role in maintaining the health of the intestinal lining. They produce and secrete mucus, which serves several important functions. Firstly, mucus acts as a protective barrier, coating the intestinal walls and preventing damage from digestive acids and enzymes. Secondly, it aids in the smooth passage of food through the intestines by lubricating the intestinal contents. Finally, mucus helps trap pathogens and particulate matter, contributing to the immune defense of the gut.
In summary, goblet cells are the primary mucus-secreting cells in the small intestine, and their secretion is vital for proper intestinal function and protection.