Question

What is the role of pepsin and renin in our stomach ?

Answer 1

Pepsin is an enzyme that breaks down proteins into smaller peptides (that is, a protease). It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food.
Renin's primary function is therefore to eventually cause an increase in blood pressure, leading to restoration of perfusion pressure in the kidneys. Renin is secreted from juxtaglomerular kidney cells, which sense changes in renal perfusion pressure, via stretch receptors in the vascular walls.

Answer 2

Answer:

Hydrochloric acid plays a major role in the process of digestion. It creates a medium of gastric juice acidic so that the enzyme pepsin digests the protein and kills the bacteria present in them. Hydrochloric acid helps your body to break down, digest, and absorb nutrients such as protein. The hydrochloric acid found in the stomach facilitates the process of digestion by disintegrating complex large food molecules into simpler molecules. The acid activates the pepsinogen enzyme required to digest proteins.

When there is no hydrochloric acid in the stomach, the iron absorption process is hindered as iron is essential in the solution for absorption. The stomach is prompted to produce acid when food is consumed for the production of the gastrin hormone. Hence, the acid lowers the pH level in the stomach, switching off the gastrin production which otherwise would lead to hypergastrinemia.