Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892



Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

How is pepsin produced? What is its function?

Summary Introduction

To review:

The production of pepsin and its function.


The alimentary canal or the digestive tract is a hollow, tubular structure that is involved in the digestion process of the body. It consists of various digestive organs, namely mouth, esophagus, stomach, liver, pancreas, small intestine, and large intestine. Various enzymes are secreted by different organs of the digestive tract that help in the digestion of food and convert them into particles that can be easily absorbed into the body cells or fluids.


The stomach is a muscular bag that stores food and produces secretions that help in digestion. The gastric glands, which extend deep into the stomach wall, have cells that secrete the substances that help in digestion. When the food enters the stomach, the stretch receptors activate and send signals for gastric juice secretion.

The gastric juice contains pepsinogen (pepsin’s precursor), hydrochloric acid (HCl) as well as the lubricating mucus...

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