Question

How is required pH maintain in the stomach and small intestine?

Answer 1

HCl is secreted by inner wall of stomach. It helps to make chyme (or food) acidic for pepsinogen to act.
The bile produced by the liver and stored by the gall bladder is alkaline. It is poured into ileum (part of small intestine)

Answer 2

Answer:

Gastric acid or the digestive juice, formed in the stomach is composed of hydrochloric acid (HCl) and large quantities of potassium chloride (KCl) and sodium chloride (NaCl). The stomach contains parietal cells that secrete HCL. The HCL creates acidic pH in the stomach necessary for the action of enzyle pepsin. Other cells in the stomach produce bicarbonate, a base, to buffer the fluid, ensuring that it does not become too acidic. The pH of gastric acid is 1.35 to 3.5 in the human stomach, the acidity being maintained by the proton pump H+/K+ ATPase. The small intestine has a pH of around 7 to 8, that is, it is either neutral or slightly alkaline in nature. The pancreas secretes the bicarbonate ions through bile juice in the small intestines. These bicarbonates neutralize the acidic pH of the food from stomach and create an alkaline pH, thus maintain the required pH in small intestines.

Explanation:

Gastric organs present on the dividers of the stomach discharge HCl. HCl make an acidic medium in stomach to encourage the activity of compound pepsin.

Bile juice from liver makes the sustenance soluble in small digestive system for pancreatic catalysts to act. Compounds work since they have unmistakable shapes - dynamic locales - which will just enable certain synthetics to bond with them (and hence be influenced). At temperatures or pH's that are above ideal, the chemical turns out to be less effective until it can't work by any means. We state that the chemical is denatured.

In the small digestive tract, the compounds that work there need a soluble pH so as to have ideal working conditions.