Question

Which hormone stimulates the stomach to secrete gastric juice?
(a)Gastrin
(b)Parathormone
(c)Thyroxin
(d)Insulin

Answer 1

Hint: It is a hormone produced by the stomach, which stimulates the release of gastric acid. It is produced by G cells in the lining of the stomach and upper small intestine.

complete answer:
-Gastrin stimulated the secretion of gastric acid from the stomach during a meal. This allows the breakdown of food that is swallowed and absorbs vitamins in the stomach.
-Gastrin acts as a disinfectant and kills most of the bacteria that enter the stomach with food, minimizing the risk of infection within the gut.
-Gastrin can stimulate the gallbladder to empty its store of bile and the pancreas to secrete enzymes.
-It can stimulate the growth of the stomach lining and increases the muscle contractions of the gut to aid digestion.

Additional information:
- The anticipation of eating before a meal can stimulate nerves within the brain which signal to the stomach and stimulate the release of gastrin.
- When gastrin levels of the gut rise above a particular level, moving acid release is stimulated leading to the stomach and small intestine ulcers that may burst.
-Parathyroid hormone is involved in maintaining calcium levels in the blood. They increase calcium levels of blood by absorbing from bones.
-Thyroxin can stimulate various metabolic activities. They increase the basal metabolic rate.
-Insulin reduces blood glucose levels by promoting glucose uptake.

So the correct answer is ‘Gastrin’.

Note: Gastric secretion is stimulated chiefly by three chemicals: Acetylcholine, histamine, and gastrin. Gastrin stimulates and maintains the proliferation of the gastric epithelium. Gastric acid is Hydrochloric acid (HC) is secreted by the parietal cells of the stomach that is activated by the gastrin and is a peptide hormone and helps with gastric motility. G cells in the pyloric antrum of the stomach, duodenum, and pancreas release it.