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The Digestive System Part 2 Accessory Organs…

The Digestive System Part 2 Accessory Organs…. Chapter 14. Photo Credit: science.nationalgeographic.com. Teeth. We use teeth to masticate (chew) our food We usually have two sets throughout life – baby teeth and permanent teeth Classify teeth: Incisors Canines ( cuspid )

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The Digestive System Part 2 Accessory Organs…

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  1. The Digestive SystemPart 2Accessory Organs… Chapter 14 Photo Credit: science.nationalgeographic.com

  2. Teeth • We use teeth to masticate (chew) our food • We usually have two sets throughout life – baby teeth and permanent teeth • Classify teeth: • Incisors • Canines (cuspid) • Premolars (bicuspid) • molars

  3. Anatomy of a Tooth Enamel is the hardest substance in the human body!

  4. Tooth Decay Slide credit: http://www.biologycorner.com

  5. METH MOUTH Slide credit: http://www.biologycorner.com

  6. Slide credit: http://www.biologycorner.com

  7. ROOT CANAL Slide credit: http://www.biologycorner.com

  8. Salivary Glands We have 3 pairs of salivary glands; the parotid, the submandibular, and the sublingual. All three produce saliva, part of which is the enzyme salivary amylase that initiates starch digestion in the mouth

  9. A Look at Chyme Chyme is what we call partly digested food as it leaves the stomach; it’s full of good stuff…yum!

  10. Pancreas • Produces enzymes that breaks down chyme • Its solutions are secreted into the duodenum and neutralize the stomach acid • The pancreas also has an endocrine function – remember insulin and glucagon?

  11. Liver & Gall Bladder • The liver is the largest gland in the body – it has many roles in metabolism but in digestion it produces • Bile – a yellow to green solution that emulsifies fat (breaks big fat globs into little globs) • Bile is stored in the gall bladder

  12. Gallstones Gallstones can be sharp and cause a lot of pain Cholesterol in the bile can crystallize if it is stored too long in the gall bladder or too much water is removed

  13. Peristalsis • You can swallow food while “standing” on your head • This is thanks to peristalsis…involuntary waves of contraction/relaxation of your alimentary canal • Guess what happens when peristalsis goes backwards?

  14. Making Fake Vomit Making fake vomit

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