by Benjamin Dorsey https://padlet.com/tlbdorsey296/6mtwennwlx en-us 2013-11-05 16:28:16 UTC 2023-03-19 05:35:12 UTC hello@padlet.com tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957318 2013-11-05 16:29:38 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957318 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957512 2013-11-05 16:31:32 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957512 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957636 2013-11-05 16:32:55 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957636 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957737 2013-11-05 16:33:44 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957737 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957879 2013-11-05 16:34:35 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15957879 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958100 2013-11-05 16:36:07 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958100 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958173 2013-11-05 16:36:43 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958173 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958297 2013-11-05 16:37:40 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958297 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958543 2013-11-05 16:39:31 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958543 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958710 2013-11-05 16:40:42 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958710 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958819 2013-11-05 16:41:34 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958819 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958990 2013-11-05 16:42:42 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15958990 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959274 2013-11-05 16:44:15 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959274 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959572 2013-11-05 16:46:06 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959572 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959786 2013-11-05 16:47:23 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959786 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959927 2013-11-05 16:48:17 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15959927 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15960122 2013-11-05 16:49:27 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15960122 Mouth: breaks down food mechanically by the action of the teeth and begins the digestion of starch through the enzyme amylase in the saliva tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987503 2013-11-05 21:25:43 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987503 Teeth: Physically breaks down food by chewing tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987529 2013-11-05 21:26:15 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987529 Salivary glands: Secretes salivary and mylase to break down complex carbohydrates. The salivary glands secrete the amylase (in saliva) into ducts which open to the surface in the mouth. tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987579 2013-11-05 21:26:54 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987579 Pharynx: Swallows tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987642 2013-11-05 21:27:58 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987642 Esophagus: food pipe tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987706 2013-11-05 21:28:48 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987706 Liver: creates bile. The liver produces the bile salts that are important for emulsification of chime. tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987755 2013-11-05 21:29:29 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987755 Pancreas: Produces chemicals and hormones, pancreatic amylase:  This enzyme digests carbohydrates.  pancreatic lipase:  This enzyme digests a variety of lipids.  It works especially well on triglycerides, which are the fats and lards that we normally think about in our diets. trypsinogen/trypsin:  Trypsinogen is what is actually secreted by the pancreatic acinar cells, but then an enzyme in the small intestines changes trypsinogen into its active enzymatic form, trypsin.  The enzyme that converts trypsinogen into trypsin is called enterokinase, and I'll describe this more on the regulation webpage.  But trypsin is an enzyme that digests proteins. chymotrypsin:  This is an enzyme that digests proteins. carboxypeptidase:  This is an enzyme that digests proteins. nucleases:  These are enzymes that digest nucleic acids.  The word "nuclease" represents any nucleic acid breaker, and there are a few different ones that our pancreas secretes. tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987894 2013-11-05 21:31:52 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987894 Stomach: Mixes salivary and mylase, food and gastric juices. Secretes hydrochloric acid which begins protein digestion. Begins digestion of fats, Gastric Juice:  This is a mixture of chemicals, but not all of them are chemicals that cause digestive breakdown of food molecules.  Here are some of the important, digestive chemicals: Pepsin/pepsinogen:  Pepsin is an enzyme that breaks down proteins.  It is actually secreted as pepsinogen by the chief cells of the gastric glands.  However, once pepsinogen encounters an acidic environment, it changes shape into its active form called pepsin. gastric lipase:  this enzyme breaks down certain lipids, but is not extremely active (it is also made by the chief cells). tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987913 2013-11-05 21:32:10 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15987913 Gall bladder: stores bile. The gallbladder releases the concentrated bile, of which only the bile salts are important chemicals for digestion tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988038 2013-11-05 21:34:43 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988038 Small intestine: digests food in three sections peptidases:  these digest the smaller pieces of broken down proteins, called peptides, into their individual amino acids. sucrase:  this breaks sucrose, a disaccharide (of the carbohydrate category) into monosaccharides. maltase:  this breaks maltose, a disaccharide (of the carbohydrate category) into monosaccharides. lactase:  this breaks lactose, a disaccharide (of the carbohydrate category) into monosaccharides. intestinal lipase:  this breaks down lipids, especially triglycerides, into their components:   glycerol and fatty acids tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988074 2013-11-05 21:35:25 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988074 Duodenum: Main digestive part of the small intestine tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988119 2013-11-05 21:36:26 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988119 Jejunum: support the absorption of carbohydrates and proteins tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988141 2013-11-05 21:36:56 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988141 Ileum: absorb vitamin B12 and bile salts and whatever products of digestion that were not absorbed by the jejunum tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988165 2013-11-05 21:37:32 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988165 Large intestine: Absorbs water. Produces bacterial products vitamin K and some vitamin B. Produces feces via chemical breakdown. Evacuates feces from the body through the rectum and anus tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988234 2013-11-05 21:38:38 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988234 Colon: The colon is meant to reabsorb water and vitamins tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988285 2013-11-05 21:39:26 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988285 Rectum: Stores and expels feces tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988298 2013-11-05 21:39:46 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988298 Anus: Opening for elimination of feces tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988371 2013-11-05 21:41:25 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988371 tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988435 2013-11-05 21:43:09 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988435 Full digestive system in action tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988447 2013-11-05 21:43:31 UTC https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988447 References tlbdorsey296 https://padlet.com/tlbdorsey296/6mtwennwlx/wish/15988553 http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/digestive%20system/digestive%20system.htm 

http://www.webmd.com/heartburn-gerd/your-digestive-system

http://science.nationalgeographic.com/science/health-and-human-body/human-body/digestive-system-article/

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