Question

What is PH and how is required ph is maintained in the stomach and small intestine. PLEASE HELP ME WITH THIS

Answer 1

pH scale is a scale to measure acidity or basicity of any chemical or any environment.
our stomach secrete pepsin and HCL which provides acidic medium for The breakdown of proteins and hence the acidic pH is maintained in stomach by this
in small intestine and enzyme name succus entericus is released which maintains the basic pH of the organ
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Answer 2

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 (oxyntic) 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 intestines 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 neutralise the acidic pH of the food from stomach and create an alkaline pH, thus maintain the required pH in small intestines........................