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Digestive Digestive SystemSystem(Part I)(Part I)
Digestive SystemDigestive System
Sometimes called Alimentary Canal – 30 ft Sometimes called Alimentary Canal – 30 ft long!long!
Two divisions:Two divisions:– Canal – where digestion occursCanal – where digestion occurs– Accessory organs – no digestion occursAccessory organs – no digestion occurs
TeethTeeth TongueTongue Salivary glandsSalivary glands LiverLiver Gall bladderGall bladder pancreaspancreas
Types of DigestionTypes of Digestion MechanicalMechanical
– Teeth Teeth – tonguetongue
Chemical – salivary Chemical – salivary enzymes break down enzymes break down proteins, fats and proteins, fats and carbohydratescarbohydrates
TeethTeeth
http://whyfiles.org/shorties/147tooth/images/teeth.jpg
Tongue Tongue
http://www.oralcancerfoundation.org/dhttp://www.oralcancerfoundation.org/dental/images/tongue_exam.jpgental/images/tongue_exam.jpg
picture of underside of tongue picture of underside of tonguehttp://www.neurobio.arizona.edu/282/Lhttp://www.neurobio.arizona.edu/282/Lectures2005/Taste/08_003.jpgectures2005/Taste/08_003.jpg
shows Tongue and taste buds shows Tongue and taste budshttp://www.morphonix.com/software/educatihttp://www.morphonix.com/software/education/science/brain/game/specimens/taste_budon/science/brain/game/specimens/taste_buds.htmls.html
Animation of taste to receptor nerve Animation of taste to receptor nervehttp://www.morphonix.com/software/educatihttp://www.morphonix.com/software/education/science/brain/game/specimens/taste_bud.on/science/brain/game/specimens/taste_bud.htmlhtml
Taste bud animated Taste bud animated
SwallowingSwallowing
http://www.innerbody.com/anim/mouth.hthttp://www.innerbody.com/anim/mouth.htmlml process of swallowing process of swallowing
http://www.innerbody.com/image/dige01.hhttp://www.innerbody.com/image/dige01.htmltml shows upper palate - hard and soft shows upper palate - hard and soft
http://www.medicalook.com/systems_imaghttp://www.medicalook.com/systems_images/Esophagus.jpges/Esophagus.jpg shows esophagus, pierces the diagragm, shows esophagus, pierces the diagragm, is located posterior to the trachea’s C-is located posterior to the trachea’s C-shaped cartilage rings.shaped cartilage rings.
http://www.admit-online.info/images/admithttp://www.admit-online.info/images/admit/cd_rom/1131_trachea09.gif/cd_rom/1131_trachea09.gif shows tracheal ring shows tracheal ring
Endoscopic ViewEndoscopic View
http://www.youtube.com/watch?v=fff7xunhttp://www.youtube.com/watch?v=fff7xunqgtI&feature=relatedqgtI&feature=related digestion and uptake of nutrients, liver digestion and uptake of nutrients, liver and portal circulation (3.50 min)and portal circulation (3.50 min)
http://www.youtube.com/watch?v=tWJoYk_http://www.youtube.com/watch?v=tWJoYk_NJt0NJt0 endoscopic views (3.50 min) endoscopic views (3.50 min)
http://www.youtube.com/watch?v=sCn5uvhttp://www.youtube.com/watch?v=sCn5uvvc3WE&feature=relatedvc3WE&feature=related mentions salivary enzymes, and mentions salivary enzymes, and lymphatic system (2.25 min)lymphatic system (2.25 min)
Types of FoodsTypes of Foods
ProteinsProteins FatsFats CarbohydratesCarbohydrates
http://www.youtube.com/watch?v=IxNhttp://www.youtube.com/watch?v=IxNpXO8gGFM&feature=relatedpXO8gGFM&feature=related
Digestion of proteins, fats and carbs Digestion of proteins, fats and carbs (2.5 min)(2.5 min)
NutritionNutrition
Let’s look at sugar in certain foodsLet’s look at sugar in certain foods Let’s look at fat contentLet’s look at fat content Reading labelsReading labels http://http://
kidshealth.org/kid/closet/games/missikidshealth.org/kid/closet/games/mission_nutrition.htmlon_nutrition.html
Layers of the Alimentary Layers of the Alimentary TubeTube
Mucosal layerMucosal layer Submucosal layerSubmucosal layer External muscle layerExternal muscle layer SerosaSerosa
Small IntestineSmall Intestine
http://www.nlm.nih.gov/medlineplus/http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19221.jpgency/images/ency/fullsize/19221.jpg shows omentum, cecal pouch, shows omentum, cecal pouch, appendixappendix
http://bio.bd.psu.edu/cat/Circulatory_http://bio.bd.psu.edu/cat/Circulatory_System/vesels%20of%20small%20intSystem/vesels%20of%20small%20intestine.jpgestine.jpg shows omentum and vascularity shows omentum and vascularity
http://www.becomehealthynow.com/ihttp://www.becomehealthynow.com/images/organs/digestive/intest_sectiomages/organs/digestive/intest_section.gifn.gif Villi Villi
LiverLiver
http://images.medicinenet.com/images/Livhttp://images.medicinenet.com/images/Liver.jpger.jpg shows location of liver in relation to ribs shows location of liver in relation to ribs
http://wwwisg.cs.uni-magdeburg.de/cv/gallhttp://wwwisg.cs.uni-magdeburg.de/cv/gallery/VesselVis/portalVein_liver.jpgery/VesselVis/portalVein_liver.jpg shows portal veins shows portal veins
http://www.freewebs.com/soaring_sphinctehttp://www.freewebs.com/soaring_sphincter_travel_agency/Liver.jpgr_travel_agency/Liver.jpg shows liver and gall bladder and ducts shows liver and gall bladder and ducts
http://www.stanford.edu/group/virus/http://www.stanford.edu/group/virus/hepadna/2004tansilvis/liverhepadna/2004tansilvis/liver%20cirrhosis.gif liver cirrhosis%20cirrhosis.gif liver cirrhosis
Gall bladderGall bladder
http://www.youtube.com/watch?http://www.youtube.com/watch?v=Pr3Md9XlLvw&feature=related v=Pr3Md9XlLvw&feature=related cholecystectomycholecystectomy
http://www.pims.math.ca/science/http://www.pims.math.ca/science/2003/inverse/gall_bladder.jpeg US of 2003/inverse/gall_bladder.jpeg US of GBGB
PancreasPancreas
Exocrine and endocrine gland. Exocrine and endocrine gland. Exocrine function is to secrete Exocrine function is to secrete
enzymes:enzymes:– AmylaseAmylase– LipaseLipase– TrypsinTrypsin
Neutralizes gastric juicesNeutralizes gastric juices
Other linkOther link
http://www.innerbody.com/image/dighttp://www.innerbody.com/image/digeov.htmleov.html - shows some body systems, - shows some body systems, animations (such as swallowing) etc.animations (such as swallowing) etc.