Question

Which of the following is not produced in the stomach?

• A. Sodium hydrogencarbonate
• B. Gastrin
• C. Hydrochloric acid
• D. Pepsinogen

Answer 1

The correct option is A Sodium hydrogencarbonate

1. The stomach produces gastrin, hydrochloric acid and pepsinogen.
2. G-cells in the stomach releases gastrin in response to distension of the antrum. This, in turn, causes an increase in the secretion of HCl from the parietal cells or oxyntic cells, which kills or inhibits bacteria and provides the acidic pH for the proteases to work and pepsinogen is released from chief cells in the stomach called zymogenic cells or peptic cells.
3. Pepsinogen, inactive form of the enzyme in presence of hydrochloric acid activates into the active form, pepsin. Pepsin breaks down proteins into polypeptides. Hence, sodium hydrogen carbonate is not produced in the stomach.
   

So, the correct answer is 'sodium hydrogen carbonate'.