digestive+system

The digestive System
The digestive System is a really bussy system and its in charge of taking all the food you eat and churning it so that nutrients can be absorbed thru the small intestine. This process is called digestion and since the time you eat it may take some hours to several days to finish digestion. In other words the Digestive System brakes food into tiny molecules than the are absorbed in the circulatory system.

There are two types of digestion mechanical digestion and chemical digestion. Mechanical digestion: is the physical braking down of food, like chewing the food until it turns into small pieces. Chemical Digestion: is when chemicals called enzymes break the food in a way that the body can absorb, saliva and fluids and the pancreas and gall blader squirt at the entrance of the small intestine. At the mouth both types of digestion occur, after the food in the mouth is turned into small pieces the tongues pushes the food into the esophagus. The esophagus is a small tube almost the size of your thumb in which food is passed from the mouth to the stomach. When food is at the the stomach it is mixed with enzymes and other gastric fluids that will make the food sufficiently small to pass on to the blood stream. A line of mucus protects the stomach from all this acids. After four hours of food being in the stomach it has the consistency of a milk shake and scientists call it chyme. After this food or chyme moves into the small intestine that is about 7 meters long. The small intestine is covered with small like hairs called vili; vili are surrounded by capillaries which then absorb the food nutrients that go into the circulatory system. In the first part of the small intestine called duodenum the pancreas and gall bladder squirt liquids that help nutrients be absorbed. After the nutrients are absorbed whats left is a watery mixture that goes into the large intestine. At the large intestine most of the water is absorbed leaving all the waste aslo know as poop; this water can keep you from dehydrating. The waste passes through the rectum and leaves the anus, this is when you go to the bathroom.

media type="youtube" key="Z7xKYNz9AS0" height="315" width="420"
This is a really good video and it shows very clearly the process I just explained.

Interconnection
The circulatory system and the digestive system are connected because during digestion the food nutrients are absorbed by vili at the small intestine. The villi are small like bumps, that are filled with capillaries when food passes through this capillaries nutrients are passed into the blood stream and then around the body.

Disease
Gastritis: Is an inflammation of the stomach. Gastritis may be caused by to much stress, excessive alcohol drinking, and by vomiting a lot. Some symptoms of gastritis are abdominal pain, vomiting blood, nausea, loss of apetite and much hiccups.

media type="custom" key="18971616" width="120" height="120" This prezi is extremely good and it shows very clearly the path food takes media type="youtube" key="qyJx_UVEgQI" height="315" width="420" This video is really good it explains the process clearly although there are things that we havnt yet learned.

My Introduction
The digestive system is a system that has many organs and glands that process food. In order to process the food we eat, our body breaks the food into many small molecules that it can process and it also has to throw out waste. The digestive system is like a long twisting tube that starts in the mouth and ends in the anus but it has to pass throw many other organs like the esophagus, pancreas, liver, the colons (descending and ascending or large and small) or in other words large and small intestine that produce digestive chemicals. The system begins in the mouth when the food is broken down by the action of chewing and the chemical action of saliva enzymes. Enzymes are various proteins. When you swallow the food it goes down through the esophagus, the esophagus is a long tube that goes through the mouth to the stomach, it uses rhythmic wave like muscle movements called peristalsis to force food from the throat into the stomach. Peristalsis is a progressive wave of contraction and relaxation of a tubular muscular system. The stomach looks like a sack-like organ which it’s job is to mix the food and it bathes it in a strong acid (gastric acid). Food in the stomach that is digested and mixed with the stomach acids are called chyme. The small intestine has many parts. The first part is called the duodenum. Then the food goes through the jejunum and then the ileum, which is the final part of the small intestine. In the small intestine the bile (which is something that is produced in the liver and is stored in the gall bladder), pancreatic enzymes, and many other enzymes that are created by the inner wall of the small intestine. In the large intestine water and electrolytes are removed from the food. Microbes (bacteria) in the large intestine help the digestion process. Food travels upward in the ascending colon, then through the abdomen In the transverse colon, goes back down the other side of the body into the descending colon and then through the sigmoid colon. The waste is then stored in the rectum and then it goes out through the anus.

media type="youtube" key="XxvRbxhqoZk" height="315" width="420" this is a very good video and it shows new words and it gives a very good explanation of the system.

Esophagitis
The disease of esophagitis is an inflammation in the esophagus. It can be severe or persistent. The severe esophagitis can be catarrhal or phlegmonous which is like a pneumonia in the esophagus. The persistent esophagitis can be hypertrophic.You can read mor by going to this address [| click here] to see the page where I got the info.

this is an image showing the inflammation of the esophagus, the disease called esophagitis.

I got this image from biodigital human, if you want to see other systems go to this page [|click here] and enjoy.

I got this image from this webpage check it out it has many info even a glossary, [|click here].

media type="custom" key="18973662" this is a very good glogster about the digestive system.