Digestive System (Part I)

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

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

Teeth

Tongue images/tongue_exam.jpghttp:// images/tongue_exam.jpg picture of underside of tongue images/tongue_exam.jpg es2005/Taste/08_003.jpghttp:// es2005/Taste/08_003.jpg shows Tongue and taste buds es2005/Taste/08_003.jpg ence/brain/game/specimens/taste_buds.html ence/brain/game/specimens/taste_buds.html Animation of taste to receptor nerve ence/brain/game/specimens/taste_buds.html ence/brain/game/specimens/taste_bud.html ence/brain/game/specimens/taste_bud.html Taste bud animated ence/brain/game/specimens/taste_bud.html

Swallowing process of swallowing process of swallowing shows upper palate - hard and soft shows upper palate - hard and soft ophagus.jpg shows esophagus, pierces the diagragm, is located posterior to the trachea’s C- shaped cartilage rings. ophagus.jpg shows esophagus, pierces the diagragm, is located posterior to the trachea’s C- shaped cartilage rings. ophagus.jpg ophagus.jpg online.info/images/admit/cd_rom/1131_trachea0 9.gif shows tracheal ring online.info/images/admit/cd_rom/1131_trachea0 9.gif shows tracheal ring online.info/images/admit/cd_rom/1131_trachea0 9.gif online.info/images/admit/cd_rom/1131_trachea0 9.gif

Endoscopic View feature=related digestion and uptake of nutrients, liver and portal circulation (3.50 min) feature=related digestion and uptake of nutrients, liver and portal circulation (3.50 min) feature=related feature=related endoscopic views (3.50 min) endoscopic views (3.50 min) E&feature=related mentions salivary enzymes, and lymphatic system (2.25 min) E&feature=related mentions salivary enzymes, and lymphatic system (2.25 min) E&feature=related E&feature=related

Types of Foods Proteins Proteins Fats Fats Carbohydrates Carbohydrates gGFM&feature=relatedhttp:// gGFM&feature=related Digestion of proteins, fats and carbs (2.5 min) gGFM&feature=related

Nutrition Let’s look at sugar in certain foods Let’s look at sugar in certain foods Let’s look at fat content Let’s look at fat content Reading labels Reading labels sion_nutrition.html sion_nutrition.html sion_nutrition.html sion_nutrition.html

Layers of the Alimentary Tube Mucosal layer Mucosal layer Submucosal layer Submucosal layer External muscle layer External muscle layer Serosa Serosa

Small Intestine /images/ency/fullsize/19221.jpg shows omentum, cecal pouch, appendix /images/ency/fullsize/19221.jpg shows omentum, cecal pouch, appendix /images/ency/fullsize/19221.jpg /images/ency/fullsize/19221.jpg em/vesels%20of%20small%20intestine.jp g shows omentum and vascularity em/vesels%20of%20small%20intestine.jp g shows omentum and vascularity em/vesels%20of%20small%20intestine.jp g em/vesels%20of%20small%20intestine.jp g es/organs/digestive/intest_section.gif Villi es/organs/digestive/intest_section.gif Villi es/organs/digestive/intest_section.gif es/organs/digestive/intest_section.gif

Liver shows location of liver in relation to ribs shows location of liver in relation to ribs magdeburg.de/cv/gallery/VesselVis/portalVein_li ver.jpg shows portal veins magdeburg.de/cv/gallery/VesselVis/portalVein_li ver.jpg shows portal veins magdeburg.de/cv/gallery/VesselVis/portalVein_li ver.jpg magdeburg.de/cv/gallery/VesselVis/portalVein_li ver.jpg vel_agency/Liver.jpg shows liver and gall bladder and ducts vel_agency/Liver.jpg shows liver and gall bladder and ducts vel_agency/Liver.jpg vel_agency/Liver.jpg 004tansilvis/liver%20cirrhosis.gif liver cirrhosis 004tansilvis/liver%20cirrhosis.gif liver cirrhosis 004tansilvis/liver%20cirrhosis.gif 004tansilvis/liver%20cirrhosis.gif

Gall bladder 9XlLvw&feature=related cholecystectomy 9XlLvw&feature=related cholecystectomy 9XlLvw&feature=related 9XlLvw&feature=related verse/gall_bladder.jpeg US of GB verse/gall_bladder.jpeg US of GB verse/gall_bladder.jpeg verse/gall_bladder.jpeg

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

Other link html - shows some body systems, animations (such as swallowing) etc. html - shows some body systems, animations (such as swallowing) etc. html html