What is the function of pepsin in stomach?

What is the function of peristalsis in these parts? stomach

what is the function of peristalsis in these parts ? Stomach

Which of the following is not the function of HCl in stomach?

What is the function of stomach?

State the function of HCl in stomach.

(a) What is the role of hydrochloric acid in our stomach ? (b) What is the function of enzymes in the human digestive system ?

What is the reason of acidity in stomach?