The Digestive System Essay -- Anatomy Processes Eating Digestion Essay

The digestive System The digestive system is a group of organs that perform the process by which fare, containing nutrients, is eaten and broken down into polar comp matchlessnts. This breakdown makes it possible for the digested material to pass through with(predicate) the intestinal seawall 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 fare enters the mouth. Saliva is secreted from the salivary glands. The saliva contains enzymes much(prenominal) as Ptyalin, which starts sugar digestion. The enzymes also provide lubrication to help in the chewing and swallowing of the food. The food so goes down the gorge and into the stomach, where the next step of digestion takes place. In the stomach, a mixed bag of hydrochloric acid and Pepsin, which is secreted by the stomach wall, liquefies the food. At the same time, a substance called intrinsic factor bin ds Vitamin B in food and various gastric enzymes, such as Pepsin (which begins protein digestion), which are secreted by the stomach wall. Secretions of mucus protect the stomach from its digestive enzymes. The food is then mixed in the stomach, turning it into chyme(digested food). The muscular pumping doing called peristalsis churns the chyme around.The chyme then passes through the pyloric valve by peristalsis to the first portion of the small intestine, the duodenum. The duodenum is where closely of the chemical digestion takes place. Here, bile from the gallbladder and enzymes from the pancreas and intestinal walls commix with the chyme to begin the final part of digestion.Bile liquid is created in the liver, and stored in the gallbladder. Bile aids in the mechanised digestion of fat. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones. These enzymes include trypsin for protein dig estion, amylase for carbohydrate digestion, and lipase for fat digestion. When the food passes through the duodenum, the digestion is complete.From the duodenum, the chyme passes to the jejunum and ileum, where tiny finger-like objects called villi, cover the walls. These villi start the absorption of food. During the absorption, food molecules enter the blood stream through the walls of the intestine. From the small intest... ...um often affects the amount or frequency of ones bowel movements. People should see a doctor if they experience any change in their bowel movements or pain while having a movement. Most patients whose cancer is confined to the intestine overhear the growth removed by surgery. They may also receive radiation therapy or chemotherapy. These patients have an subtle chance of being cured. Patients whose cancer has spread beyond the intestine usually have surgery, supplemented by radiation therapy or chemotherapy.Works CitedBroitman, Selwyn A. Digestive System . Grolier Multimedia Encyclopedia. 1998.Digestive System. A.D.A.M. The Inside Story. Vers. 2.01. Computer Software. A.D.A.M. Software Inc., 1996Dubois, Andre. Constipation. homo keep back Multimedia Encyclopedia. 1999Dubois, Andre. Diarrhea. World Book Multimedia Encyclopedia. 1999Dubois, Andre. Digestive System. World Book Multimedia Encyclopedia. 1999Franklin, James L. Ulcer. World Book Multimedia Encyclopedia. 1999Lindsay, Mary. The Visual Dictionary of the serviceman Body. New York Dorling Kindersley, Inc., 1991.Plaut, Andrew G. Appendicitis. World Book Multimedia Encyclopedia. 1999 The Digestive System Essay -- Anatomy Processes Eating Digestion EssayThe 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 proc ess 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, where the next step of digestion takes place. In the stomach, a mixture of hydrochloric acid and Pepsin, which is secreted by the stomach wall, liquefies the food. At the same time, a substance called intrinsic factor binds Vitamin B in food and various gastric enzymes, such as Pepsin (which begins protein digestion), which are secreted by the stomach wall. Secretions of mucus protect the stomach from its digestive enzymes. The food is then mixed in the stomach, turning it into chyme(digested food). The muscular pumping motion called peristalsis churns the chyme aro und.The chyme then passes through the pyloric valve by peristalsis to the first portion of the small intestine, the duodenum. The duodenum is where most of the chemical digestion takes place. Here, bile from the gallbladder and enzymes from the pancreas and intestinal walls combine with the chyme to begin the final part of digestion.Bile liquid is created in the liver, and stored in the gallbladder. Bile aids in the mechanical digestion of fat. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones. These enzymes include trypsin for protein digestion, amylase for carbohydrate digestion, and lipase for fat digestion. When the food passes through the duodenum, the digestion is complete.From the duodenum, the chyme passes to the jejunum and ileum, where tiny finger-like objects called villi, cover the walls. These villi start the absorption of food. During the absorption, food molecules enter the blood stream through the walls of the intestine. From the small intest... ...um often affects the amount or frequency of ones bowel movements. People should see a doctor if they experience any change in their bowel movements or pain while having a movement. Most patients whose cancer is confined to the intestine have the growth removed by surgery. They may also receive radiation therapy or chemotherapy. These patients have an excellent chance of being cured. Patients whose cancer has spread beyond the intestine usually have surgery, supplemented by radiation therapy or chemotherapy.Works CitedBroitman, Selwyn A. Digestive System. Grolier Multimedia Encyclopedia. 1998.Digestive System. A.D.A.M. The Inside Story. Vers. 2.01. Computer Software. A.D.A.M. Software Inc., 1996Dubois, Andre. Constipation. World Book Multimedia Encyclopedia. 1999Dubois, Andre. Diarrhea. World Book Multimedia Encyclopedia. 1999Dubois, Andre. Digestive System. World Book Multimedia Encyclopedia. 1999Franklin , James L. Ulcer. World Book Multimedia Encyclopedia. 1999Lindsay, Mary. The Visual Dictionary of the Human Body. New York Dorling Kindersley, Inc., 1991.Plaut, Andrew G. Appendicitis. World Book Multimedia Encyclopedia. 1999