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How enzymes help with digestion

Brandon Hentkowski

on 23 April 2013

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Transcript of Enzymes

Enzymes The Stomach Enzymes & Digestion Mouth Ileum It has the final job before the Large Intestine & Rectum. It gets all the leftover particles- fats, sugars, proteins, vitamins and minerals. The illeum has a pH of 6 to 9. Enzymes are biological catalysts. They are integral to digestion because they break up different foods into the molecules the body needs for survival. The mouth is the site where most simple sugars are broken down. They are broken down by mechanical digestion, which is caused by chewing, mucus and teeth. An enzyme present in the mouth is Salvary amylase, which breaks down carbohydrates. The pH at which amylase works best is 6-9, which is the acidity of the mouth. is where proteins are primarily broken down. The stomach secretes gastric juices (HCL) to crush food. The pH level is 1-3, an inxredibly acidic level for breaking down tough foods. Enzymes become active at certain pH. Salivary
Amylase, 6.7 - 7.0 Protease, 7 - 10 Pepsin, 1.5 - 2 Lipase, 3 - 6 Rennin, 3.4 Duodenum The duodenum, or small intestine, digests carbohydrates and lipids very well. The enzymes in this neutral, acids-and-bases environment like Lipase disperse the fat into tiny globules. Some proteins and simple sugars like starches are still being broken down, but they are all completed in this stage. Ptyalin, 5.6 - 6.9 Maltase, 6.1 - 6.8 Lactase, 2.0 - 4.0 Lock-And-Key Major Digestive Enzymes Emulsification LAB Digestive Hormones Gastrin----> HCL Release
Secretin----> Bicarbonate &Bile Release
CCK (Cholecystokinin)----> Pancreatic Enzyme Release & Bile Brush Border Enzymes Sucrase, Maltase, Lactase Chief Cells ------> Pepsinogen----> Pepsin Lingual Lipase Sucrase
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