The excretory system1

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The excretory system1

  1. 1. Thinking/Review Questions1) Where do enzymes made in the pancreas come incontact with food?2) What do you think would happen if you did not have agall bladder?3) We learned the surface area of the small intestine isvery important in digestion. Increasing the surface areaof the FOOD by chewing is just as important. Tell mewhy.4) An airplane helps you get to a place faster thandriving : Digestive enzymes help you_______________________________.5) Cows have 4 chambered stomachs. Try to guess thereason they need so many stomach chambers.
  2. 2. Student Questions1) Why does the inside of the stomach look like a brain?
  3. 3. Student Questions1) Why does the inside of the stomach look like a brain?The folds in thestomach are calledrugae. They allow thestomach to expandgreatly. When you eat alot, the rugae will slowlysmooth out as theyaccommodate thegrowing stomach.
  4. 4. Student Questions2) Is glucose a monosaccharide?The liver stores sugar as GLYCOGEN. Glycogen is apolysaccharide, which just means it is one big block ofmany sugars. When the body needs sugar, the liverbreaks glycogen and send out glucose. Glucose is amonosaccharide.Video.....
  5. 5. Student Questions3) Where is the gall bladder and common bile duct onthe liver?1 left lobe2 right lobe3 caudate lobe4 quadrate lobe5 hepatic artery and portalvein6 hepatic lymph nodes7 gall bladder
  6. 6. Student Questions3) Where is the gall bladder and common bile duct onthe liver?We had the right lobe in lab. Can you see why theyprobably sell the right lobe at most markets??1 left lobe2 right lobe3 caudate lobe4 quadrate lobe5 hepatic artery and portalvein6 hepatic lymph nodes7 gall bladder
  7. 7. Phone ResearchYahoo answer = 50/50 very badWikipedia = better, still not 100% perfect (it is written bynormal people, not scientists or researchers)If you want to find VERY good sources of information,try scrolling down in your searches and looking foruniversities or medical research. Sometimes you canspot them by seeing a ".edu" These will almost alwaysbe correct. Example.... "function of bile".....
  8. 8. Human Excretory System
  9. 9. What Does Excretory Mean?Excrete means to push waste out of thebody.The excretory system helps the body getwaste and toxins out.
  10. 10. Why Do We Have Toxins inOur Bodies?There are 2 types of toxins:1) Exogenous Toxins - chemicals that are madeOUTSIDE your body, and then you ingest them.2) Endogenous Toxins - harmful chemicals that aremade INSIDE your body.
  11. 11. Why Do We Have Toxins inOur Bodies?There are 2 types of toxins:1) Exogenous Toxins - chemicals that are madeOUTSIDE your body, and then you ingest them.2) Endogenous Toxins - harmful chemicals that aremade INSIDE your body.So, you can eat, drink or inhale toxins. ALSO, yourhealthy body makes toxins naturally!Many of your healthy organs produce byproducts thatare harmful (toxic) to your body! Your excretory systemgets these toxins OUT of your body!
  12. 12. Sources of Exogenous ToxinsA few examples....1) Processed foods!2) Pollution (traffic, factories)3) Deodorant (contain aluminum)4) Artificial sweetener
  13. 13. Sources of Exogenous ToxinsA few examples....1) Processed foods!2) Pollution (traffic, factories)3) Deodorant (contain aluminum)4) Artificial sweetener
  14. 14. Sources of Endogenous ToxinsAn example.....When we digest protein, ammonia is produced.Ammonia is toxic to humans! So our body must excretethe ammonia.
  15. 15. Questions (Can Use Phone/Internet)1) What does excrete mean?2) What is the Latin word that excrete comes from (itsorigin)?3) What does ingest mean?4) What does "endo" mean in Greek?5) What does "exo" mean in Greek?6) What is a byproduct?7) List 10 sources of exogenous toxins we did NOT talkabout in class.8) If so many things contain toxins, why is everyone sohealthy?9) Do a google search for "stomach rugae" right now.What is the name of the first website that you can trustalmost 100%??

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