This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Normal gastric juice contains all except: 
Select and explain. 
A. Na+, B. IQ-, C. Ca++, D. Mg+
C: Ca++
Answer: C: Ca++ 
Explanation: C i.e. Ca++The cells of the gastric glands secrete about 2500 ml of gastric juice dailyQ.