Q. As you know that $HCl$ is highly acidic (1.5 to 2.0 pH) in the stomach, however, the epithelium of the mucosa remains unaffected/undissolved. Why?
A) Mucous continues to lubricate the inner lining
B) Bicarbonates present in the gastric juices protect the linings
C) Both (a) and (b)
D) None of the above
Explanation
Goblet cells are present throughout, the epithelium of mucosa, which secret mucous and continuously lubricate the inner most layer. It protects the stomach wall along with bicarbonates of gastric juices, against $HCl$ action and protein digesting enzymes
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.