Reason
It promotes secretion of HCl and trypsinogen.
Assertion
Gastrin is a hormone that is released from the gastrointestinal tract and helps in digestion.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Assertion is correct but Reason is incorrect
C
Both Assertion and Reason are incorrect
D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Correct option is C. Assertion is correct but Reason is incorrect
- Gastrin is a peptide hormone that stimulates the secretion of gastric acid (HCl) by the parietal cells of the stomach and helps in gastric motility or digestion.
- It is released by G cells in the pyloric antrum of the stomach, duodenum, and pancreas.
- Hence, Gastrin is a hormone that is released from the gastrointestinal tract and helps in digestion.
- The presence of gastrin stimulates parietal cells of the stomach to secrete hydrochloric acid (HCl) or gastric acid.
- Trypsin is produced as the inactive trypsinogen in the pancreas. When the pancreas is stimulated by cholecystokinin, it is then secreted into the first part of the small intestine.
- Hence, it promotes the secretion of HCl but not of trypsinogen.
- So, the correct answer is 'Assertion is correct but Reason is incorrect'.