DIGESTION AND ABSORPTION http://www.google.ca/imgres?q=digestion+cartoon&hl=en&biw=1366&bih=653&tbm=isch&tbnid=Q8tRr9F4kWNTfM:&imgrefurl=http://tsflick88.edu.glogster.com/digestive-system&docid=H6Fi_lXFmHux4M&imgurl=http://edu.glogster.com/media/1/9/56/60/9566033.jpg&w=397&h=567&ei=vB5MT_7nHKPl0QHa9cihDg&zoom=1&iact=hc&vpx=779&vpy=124&dur=629&hovh=258&hovw=181&tx=94&ty=134&sig=117930308719292859020&page=1&tbnh=141&tbnw=99&start=0&ndsp=21&ved=1t:429,r:4,s:0

DIGESTION AND ABSORPTION OVERVIEW When you eat a food, it must be broken down into smaller compounds so it can be used by the body – this process is digestion Once the food is broken down, it must be taken into the body so it can do its work – this process is absorption http://www.google.ca/imgres?q=digesting+food&hl=en&biw=1366&bih=653&tbm=isch&tbnid=DhW70WTIhrtWtM:&imgrefurl=http://www.helpful.com/metabolism-boosters-pros-and-cons_290&docid=rtouXojwdCx9WM&imgurl=http://www.helpful.com/sites/default/files/imagecache/article_image/images/health_salad-diet_fitness.jpg&w=650&h=340&ei=aR9MT6LVJezK0AGyxfifDg&zoom=1&iact=rc&dur=434&sig=117930308719292859020&page=7&tbnh=82&tbnw=156&start=149&ndsp=24&ved=1t:429,r:14,s:149&tx=94&ty=33

THE DIGESTIVE TRACT The digestive or gastrointestinal tract (GI)is a tube about 30 feet (9 m) long that runs from your mouth to your anus It contains the mouth, esophagus, stomach, small intestines, large intestines and the anus http://www.google.ca/imgres?q=digestive+tract&start=468&hl=en&sa=X&biw=1366&bih=653&tbm=isch&prmd=imvns&tbnid=8xgdPegoGHMffM:&imgrefurl=http://www.dipity.com/timeline/Digestive-System/%3F_escaped_fragment_%3D&docid=ZtXRonADmW5fGM&imgurl=http://cache.daylife.com/imageserve/04nScA41ANeQP/320x320.jpg&w=320&h=320&ei=gBxMT9CSLZPJ0AGb9rGQDg&zoom=1&chk=sbg&iact=hc&vpx=721&vpy=179&dur=259&hovh=225&hovw=225&tx=98&ty=100&sig=117930308719292859020&page=18&tbnh=147&tbnw=147&ndsp=26&ved=1t:429,r:16,s:468

THE DIGESTION PHASES As food is passing through our GI tract, there are two major actions that helps to break down and move our food They are the: THE MECHANICAL PHASE (machine like actions) Our teeth are the first step in breaking down the food Peristalsis contractions help the food move through our tract http://www.google.ca/imgres?q=teeth&hl=en&biw=1366&bih=653&tbm=isch&tbnid=mBBPLhC3wrMEOM:&imgrefurl=http://digitalartempire.com/2011/04/whiten-teeth-phtoshop-video-tutorial/&docid=Uvb9gUFQwLQvkM&imgurl=http://digitalartempire.com/wp-content/uploads/2011/04/2657.jpg&w=420&h=300&ei=kSFMT-OfEOy10QGdwtXyDQ&zoom=1&iact=hc&vpx=286&vpy=110&dur=1419&hovh=190&hovw=266&tx=144&ty=128&sig=117930308719292859020&page=1&tbnh=131&tbnw=157&start=0&ndsp=21&ved=1t:429,r:1,s:0http://www.google.ca/imgres?q=peristalsis&num=10&hl=en&biw=1366&bih=653&tbm=isch&tbnid=mSOpQM399VcJyM:&imgrefurl=http://www.agmd-gimotility.org/About%2520Motility.htm&docid=hxUcxGvHtQBEFM&imgurl=http://www.agmd-gimotility.org/Images/digestive_peristalysis_400x300.jpg&w=400&h=300&ei=SyRMT9reM4jg0QGC7-GCDg&zoom=1&iact=hc&vpx=193&vpy=118&dur=417&hovh=127&hovw=189&tx=107&ty=93&sig=117930308719292859020&sqi=2&page=1&tbnh=127&tbnw=189&start=0&ndsp=21&ved=1t:429,r:7,s:0

THE CHEMICAL PHASE (chemicals that help to break down the food) Saliva, which is found in our mouth, is the first chemical that food encounters As food moves to the stomach and intestines, gastric juices, hydrochloric acid and enzymes are added, all to help break down food Any food that is not broken down and absorbed, leaves the body through the anus http://www.google.ca/imgres?q=saliva&hl=en&biw=1366&bih=653&tbm=isch&tbnid=U6Dql6UwINA91M:&imgrefurl=http://blog.danone.ca/2011/05/24/the-secret-life-of-saliva/&docid=fBy2-k0y47RlYM&imgurl=http://blog.danone.ca/wp-content/uploads/2011/05/saliva_iStock_000004130554Small-560x296.jpg&w=560&h=296&ei=BCxMT6zZH8Tf0QGD_Zm2Dg&zoom=1&iact=rc&dur=516&sig=117930308719292859020&page=4&tbnh=91&tbnw=173&start=76&ndsp=28&ved=1t:429,r:8,s:76&tx=103&ty=62 http://www.google.ca/imgres?q=digestive+juices&hl=en&biw=1366&bih=653&tbm=isch&tbnid=ac1ky1A6lzzLAM:&imgrefurl=http://kvhs.nbed.nb.ca/gallant/biology/digestive_juices.html&docid=a653RJ6S635oBM&imgurl=http://kvhs.nbed.nb.ca/gallant/biology/digestive_juices.jpg&w=800&h=521&ei=LypMT8i2MePK0AHBuPS0Dg&zoom=1&iact=hc&vpx=176&vpy=195&dur=391&hovh=134&hovw=206&tx=121&ty=69&sig=117930308719292859020&page=1&tbnh=113&tbnw=174&start=0&ndsp=22&ved=1t:429,r:0,s:0

THE ABSORPTION PROCESS For food to be used it must move from the digestive tract into the bloodstream, a process called absorption Our body can absorb water, alcohol and simple sugars directly from the stomach into the bloodstream The majority of the absorption takes place in the small intestines Once in the bloodstream, food is moved to all the cells in our body The cells go through another chemical process called metabolism which allows the food to be used

http://www.youtube.com/watch?v=P5lyQUtq1KQ

THE DIGESTIVE TRACT Label your diagram by using the following parts Stomach Parotid gland Salivary gland Small intestine Liver Rectum Appendix Gall bladder Esophagus Large intestine Anus Pancreas