Question

Which of the following hormones helps in secretion of HCL from the stomach?
A. Renin
B. Gastrin
C. Secretin
D. Somatomedin

Answer 1

Hint: Stomach is the wide, J-shaped distensible, muscular sac placed on the left side in the upper part of the abdomen just below the diaphragm. It is about 30 cm long and 15 cm wide and has a greater and lesser curvature along its lower and upper sides. It extends beyond the greater curvature and stores fat and is called a greater omentum. It secretes a glycoprotein called castle’s intrinsic gastric factor and also secretes the hormone gastrin.

Complete answer:
Let, us we consider all the options-
Renin is also called chymosin. It is a proteolytic enzyme related to pepsin. It is released in the stomach of animals by the help of chief cells, for example in cows it is released for the digestion of milk. In humans it is released in the infant stomach.
Gastrin cells are present in the pyloric region of the stomach and stimulate the gastric glands to secrete and release the gastric juice. And also stimulates gastric motility. The HCL is secreted in the parietal cells (are large, deep seated and most numerous cells on the side walls of the gastric glands).
Secretin is that type of hormone that regulates the water homeostasis. So, it is not responsible for the secretion of HCL.
Somatomedin is the group of proteins that promotes the cell growth and the division in response to the growth hormone.

So, the correct answer is “Option B”.

Note:
The gastric juice contains the HCL due to which it is acidic in nature. HCL kills the harmful bacteria. It changes pepsinogen into pepsin and prorennin into rennin.
It also softens the food and dissolves the cement materials between the cells of the food in order to make them readily available for enzyme action. It is believed to control the opening and closing of the pyloric opening of the stomach.