The Journey Through the Digestion Process

THE JOURNEY THROUGH THE DIGESTION PROCESS MARSHA EDWARDS HS 130, SECTION 9 KAPLAN UNIVERSITY 02 OCTOBER 2012 Ok folks we ar about to embark on our expedition through the digestive system. Is everyone ready for takeoff? Here weeeeee goooooooo! whoosh! It is in the mouth, that the ground beef begins its journey through the fabulous digestive system. It is hither that the lips, cheeks and tongue, conservatively position the provender that the teeth will chew. This chewing plow passs up the burger, this being a part of mechanical digestion. bit the teeth grind up the ground beef, the salivary glands begin emitting enzymes, these enzymes being contained in saliva. This saliva helps to pick some fodders, and adds mucus to pay the foods passage through the digestive system a scant(p) more speedy. Did I joint speedy? tame on to your shorts everyone! The saliva as well attacks dangerous microorganisms which come out the mouth. Saliva also contains an enzyme wh ich helps to break dump carbohydrates into sugars. As the hamburger is being ground and cover with saliva, its passed over the taste buds, which in turn send messages to the header. The brain uses this information to decide whether or not the food should be swallowed.

The food is then self-possessed into a ball, called a bolus, and it is pushed down into the pharynx by way of the tongue. Hold On everyone. This bolus of hamburger is then passed down the esophagus, the esophagus being a 24cm desire tube which connects the pharynx and stomach. lining the walls of the esophagus all about you are rings of ene rgyman which contract in waves, force the b! olus down the length of the esophagus. At the base of the esophagus, over on that point where the esophagus and stomach join, a thick ring of muscle is called a sphincter. At the press down end of esophagus, here is an esophageal sphincter which acts as a gateway which allows food to enter the stomach and then squeezes closed in(p) to keep food or fluid from flowing seat up into the esophagus. Do you...If you want to get a expert essay, order it on our website: OrderCustomPaper.com

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