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Digestive System

The wonders of the human digestive system

Tristan Mendez

on 3 May 2010

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Transcript of Digestive System

Double click anywhere & add an idea The Digestive System mouth phargnx esophagus stomach small intestine large intestine liver gallbladder Pancreas Teeth
slaviary glands
enzymes in salvia
All this helps break down and moisten the food so that it can be broken down and swallowed

The stomach temporaliy stores food eaten at each meal
In the stomach food is futher broken down by two things mainly, Muscle Contractions and by acid juices
Then the food is passed to the small intestine

The small intestine is where most of the food is broken down by phyical grinding and by speical protiens called enzymes
This is where the food is almost into a liquid and most of the foods nutrients is getting absorbed by the body

When it reaches the large intestine most of the food's useful products have been removed
All that is left is the waste of the food
Its main function is to absorb water back into the body and to store the waste until it is excerted from the body
All the esopagus does is it is the passage-way from the mouth to the stomach Main function of the Digestive system is to convert food into simpler molcules that can be used by the cells of the body
Also absorbs foods and rids of waste The gallbladder is a small organ that stores and concentrates bile. The gallbladder is connected to the liver by the hepatic duct. It is approximately 3 to 4 inches long and about 1 inch wide The function of the gallbladder is to store bile and concentrate. Bile is a digestive liquid continually secreted by the liver. The bile emulsifies fats and neutralizes acids in partly digested food. The pancreas is a gland organ in the digestive and endocrine system of vertebrates. It is both an endocrine gland producing several important hormones, including insulin, glucagon, and somatostatin, as well as an exocrine gland, secreting pancreatic juice containing digestive enzymes that pass to the small intestine. These enzymes help in the further breakdown of the carbohydrates, protein, and fat in the chyme.

Disorders and Dieases Some of the functions are: to produce substances that break down fats, convert glucose to glycogen, produce urea (the main substance of urine), make certain amino acids (the building blocks of proteins), filter harmful substances from the blood (such as alcohol), storage of vitamins and minerals (vitamins A, D, K and B12) and maintain a proper level or glucose in the blood. The liver is also responsible for producing cholesterol. It produces about 80% of the cholesterol in your body. The pancreas makes enzymes and hormones such as insulin and glucagon for the body. Enzymes are substances that speed up reactions in the body. The enzymes manufactured by the pancreas are necessary for the digestion of food. Injury or disease of the pancreas can result in severe illness and possibly death Constipation Diarrhea Crohn’s disease is an inflammation of the digestive tract, thought to be caused by an abnormal immune reaction to food, bacteria, or even the lining of the intestines or colon.

Achalasia is the inability to swallow caused by the inability of the lower esophagus A job dealing with the digestive system could be a gastroenterologist and the average salary is 317,903. to do this you need to have to go to medical school and go to 2-4 year traning at the hospital. Some current research that is that they now know where gastic cancer begins. It doesnt form from stomach stem cells but from marrow derived stem cells and more research is being done to see if they can stop cancer and brings about many questions about where many cancers orginate from.
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