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HW: Current events - Roll Call #1-4 on Fri. Study all materials reviewing digestion from mouth to stomach for Quiz tomorrow 11/9/15 Do Now: 1) Take out your Organs of the Digestive system notes from Friday 2) What nutrient is digested in the stomach? Proteins What enzyme digests that nutrient? Pepsin What chemical neutralizes the acid in the stomach? Bicarbonate WHY does this happen?Neutralizes the Acid How Long Is My Digestive System? Mouth: 13 cm (5 inches) Esophagus: 25 cm (10 inches) Stomach: 20 cm (8 inches) Small Intestine: 700 cm (21 feet) Large Intestine: 150 cm (5 feet) Total Length: about 900 cm (about 28 feet) Notes to Finish the Unit Small intestine: 18-21 feet long Most chemical digestion occurs here and absorption of nutrients occurs here. _______________________________ All _________ digestion finishes here Contain “_______” that increase surface villi area for absorption Large Intestine What is this? 5-6 feet long Has helpful ___________ that feed on bacteria material passing through ___________________ Re-absorption of water occurs here Feces is stored _____ here until eliminated by wavelike contractions (peristalsis) Accessory organs No ________ food passes through these organs!! Liver bile Produces ______________ Fat Substance that breaks up __________ (chemical digestion) Largest organ in the body __________ Gall Bladder Bile is ____________ in the gall bladder stored Gall Bladder releases bile through a duct into the small intestine Pancreas Helps you digest food by breaking down Carbohydrates Fats _________, Protein ______ and __________ Pancreatic enzymes are released into the Small intestine ________________ Digestion Word Box: Gall Bladder Lg Intestine Esophagus Pancreas Digestion Sm Intestine Rectum Pancreas Esophagus Stomach Bile Sm. Intestine Lg. Intestine Rectum Gall Bladder Bile Stomach Small Intestine Activity How does the small intestine increase its surface area to absorb more nutrients??? Villus Small Intestine Blood Vessel Food Particle Small Intestine Diffusion It is transported throughout the body The villi increase the surface area to allow for more absorption of nutrients into the body A B A A B A A BrainPOP – Digestion! www.brainpop.com