What does the alkaline mucus secreted by mucous cells do?

The alkaline mucus secreted by mucous cells plays a crucial role in protecting the stomach lining. It serves to neutralize gastric acid, creating a more favorable pH environment for the stomach tissue and preventing damage from the corrosive effects of hydrochloric acid produced by parietal cells. This mucus acts as a physical barrier that shields the epithelial cells lining the stomach, thus reducing the risk of ulcer formation and irritation. Additionally, the alkaline nature of the mucus helps maintain the integrity of the gastric mucosa and supports proper function of the stomach.

The other options touch on different functions within the digestive system. For instance, while there are cells in the stomach that produce digestive enzymes, these are not the role of mucous cells. Hormone release related to digestion is stimulated by other cells, primarily from the stomach lining and the pancreas. Lastly, bolus formation is associated with mechanical processes and the action of saliva rather than the function of mucous cells in the gastric environment.