The Digestive System Essay

1262 Words 6 Pages
The Digestive System

The digestive system is a group of organs that perform the process by which food, containing nutrients, is eaten and broken down into different components. This breakdown makes it possible for the digested material to pass through the intestinal wall into the blood stream. The digestive process contains many different steps that take place in many different organs.The first step of digestion begins at the mouth, where the food enters the mouth. Saliva is secreted from the salivary glands. The saliva contains enzymes such as Ptyalin, which starts sugar digestion. The enzymes also provide lubrication to help in the chewing and swallowing of the food.

The food then goes down the esophagus and into the stomach,
…show more content…
It then enters the large intestine. There are six parts to the large intestine: the cecum, ascending colon, transverse colon, descending colon, sigmoid colon, and rectum. The appendix is attached near the bottom of the cecum. The appendix intercepts pathogenic microorganisms the enter the digestive tract.

In the other parts of the large intestine, water and minerals are absorbed. The remaining material is then compacted into feces through peristalsis and passed out of the body through the rectum and the anus.A peptic ulcer is an open sore in the mucus membrane of the stomach. While and ulcer is developing, part of the surface tissue breaks down, dies, and becomes inflames. There are two types of peptic ulcers. The first is the duodenal, which forms in the duodenum. Gastric ulcers develop in the stomach.

The pepsin, located in the stomach, can eat through the lining of the stomach and the duodenum. Pepsin wouild not normally eat through the lining of the stomach and duodenum because of mucus which is normally secreted to protect the walls of them. Most peptic ulcers cause pain in the upper part of the abdomen. Peptic ulcers occur usually when the stomach is empty. People can reduce the risk of ulcers by not smoking and drinking alcoholic beverages.Constipation is another disorder that affects the digestive system. It is a condition in which

Related Documents