This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Physiology
The chief cells of the stomach secrete: 
Select and explain. 
A. Intrinsic factor, B. Hydrochloric acid, C. Pepsinogen, D. Gastrin
C: Pepsinogen
Answer: C: Pepsinogen 
Explanation: Ans. C. PepsinogenThe chief cells of the stomach secrete pepsinogen, and the parietal cells of the stomach secrete hydrochloric acid and intrinsic factor. Gastrin and CCK are secreted by specialized endocrine cells.