Chapter 1 Brief Information on the Structure and Function of the Digestive System

The digestive system is one of the most important systems in the human body, as it provides the nutrients necessary for life. Typically, the digestive system includes a number of organs that work together to process the food ingested.

The main organs of the digestive system are the mouth, esophagus, stomach, small intestine, large intestine and anus. All of these organs interact with each other to form a complete system that processes and processes food.

The oral cavity is the starting point of the digestive system. Here the food is kneaded and mixed with saliva, which contains enzymes that begin to break it down. The food then passes through the pharynx into the esophagus, which connects the mouth to the stomach. The esophagus is a long tube that contracts and dilates to move food further through the system.

The stomach is the next organ in the digestive system. It is a sac that contains acid and enzymes that continue to break down food started in the mouth. The food then passes into the small intestine, which is the longest organ of the digestive system. In the small intestine, nutrients from food are absorbed into the bloodstream and transported throughout the body.

The large intestine is the last organ in the digestive system. It is responsible for the utilization of water and salts, as well as for the formation of feces from the remains of undigested food. Then the remaining digestive products are expelled through the anus.

In general, the digestive system is a complex and unique system that performs a number of important functions necessary for human life. Understanding how it works can help recognize and treat diseases associated with it.