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Digestive System (Part I)

Digestive System (Part I). Digestive System. Sometimes called Alimentary Canal – 30 ft long! Two divisions: Canal – where digestion occurs Accessory organs – no digestion occurs Teeth Tongue Salivary glands Liver Gall bladder pancreas. Types of Digestion. Mechanical Teeth tongue

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Digestive System (Part I)

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  1. Digestive System(Part I)

  2. Digestive System • Sometimes called Alimentary Canal – 30 ft long! • Two divisions: • Canal – where digestion occurs • Accessory organs – no digestion occurs • Teeth • Tongue • Salivary glands • Liver • Gall bladder • pancreas

  3. Types of Digestion • Mechanical • Teeth • tongue • Chemical – salivary enzymes break down proteins, fats and carbohydrates

  4. Teeth • http://whyfiles.org/shorties/147tooth/images/teeth.jpg

  5. Tongue http://www.oralcancerfoundation.org/dental/images/tongue_exam.jpg picture of underside of tongue http://www.neurobio.arizona.edu/282/Lectures2005/Taste/08_003.jpg shows Tongue and taste buds http://www.morphonix.com/software/education/science/brain/game/specimens/taste_buds.html Animation of taste to receptor nerve http://www.morphonix.com/software/education/science/brain/game/specimens/taste_bud.html Taste bud animated

  6. Swallowing • http://www.innerbody.com/anim/mouth.html process of swallowing • http://www.innerbody.com/image/dige01.html shows upper palate - hard and soft • http://www.medicalook.com/systems_images/Esophagus.jpg shows esophagus, pierces the diagragm, is located posterior to the trachea’s C-shaped cartilage rings. • http://www.admit-online.info/images/admit/cd_rom/1131_trachea09.gif shows tracheal ring

  7. Endoscopic View • http://www.youtube.com/watch?v=fff7xunqgtI&feature=related digestion and uptake of nutrients, liver and portal circulation (3.50 min) • http://www.youtube.com/watch?v=tWJoYk_NJt0 endoscopic views (3.50 min) • http://www.youtube.com/watch?v=sCn5uvvc3WE&feature=related mentions salivary enzymes, and lymphatic system (2.25 min)

  8. Types of Foods • Proteins • Fats • Carbohydrates http://www.youtube.com/watch?v=IxNpXO8gGFM&feature=related Digestion of proteins, fats and carbs (2.5 min)

  9. Nutrition • Let’s look at sugar in certain foods • Let’s look at fat content • Reading labels • http://kidshealth.org/kid/closet/games/mission_nutrition.html

  10. Layers of the Alimentary Tube • Mucosal layer • Submucosal layer • External muscle layer • Serosa

  11. Small Intestine • http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19221.jpg shows omentum, cecal pouch, appendix • http://bio.bd.psu.edu/cat/Circulatory_System/vesels%20of%20small%20intestine.jpg shows omentum and vascularity • http://www.becomehealthynow.com/images/organs/digestive/intest_section.gif Villi

  12. Liver • http://images.medicinenet.com/images/Liver.jpg shows location of liver in relation to ribs • http://wwwisg.cs.uni-magdeburg.de/cv/gallery/VesselVis/portalVein_liver.jpg shows portal veins • http://www.freewebs.com/soaring_sphincter_travel_agency/Liver.jpg shows liver and gall bladder and ducts • http://www.stanford.edu/group/virus/hepadna/2004tansilvis/liver%20cirrhosis.gif liver cirrhosis

  13. Gall bladder • http://www.youtube.com/watch?v=Pr3Md9XlLvw&feature=related cholecystectomy • http://www.pims.math.ca/science/2003/inverse/gall_bladder.jpeg US of GB

  14. Pancreas • Exocrine and endocrine gland. • Exocrine function is to secrete enzymes: • Amylase • Lipase • Trypsin • Neutralizes gastric juices

  15. Other link • http://www.innerbody.com/image/digeov.html - shows some body systems, animations (such as swallowing) etc.

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