What is the purpose of the mucosal barrier between the cells of the stomach wall and the stomach contents? A. It prevents the enzymes in the stomach contents from digesting the stomach B. It converts pepsinogen to its active form. C. It prevents bacteria in the stomach from invading the stomach wall. D. It prevents undigested food molecules from being absorbed by the stom- ach lining.
Option A. The stomach contents encompass the enzyme pepsin and hydro- chloric acid, each of which might harm the epithelial cells of the stimach if in touch with them.
