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Fun Facts on Digestion • Stomach growling??? – Intestines contracting. • Burping or a “little flatulence”??? – trapped gas and air from bacteria. • Every person eats @3lbs of food / day – 1095 lbs of food / year!!!!! • Entire digestive system is 30 ft long!!! • You produce 1 qt of saliva / day!!! “Chewing your cud” – How many stomachs does a cow have???? – 4 !!!! What organ is attached to your large intestines and has no known purpose??? Your appendix Digestive System Digestion – the chemical and mechanical breaking down of food into something the cells can use. Kidshealth Major Organs & Functions • • • • • • Mouth Esophagus Stomach Small Intestines Large Intestines / colon Rectum & Anus • Liver • Gall Bladder • Pancreas Saltine Crackers • Epiglottis – flap of cartilage – closes trachea (windpipe) when swallowing – food travels down esophagus • Peristalsis – involuntary muscle contractions to move food along Esophagus - carries chewed food to the stomach. *Peristalsis – muscle contractions that push the food down the tube. stomach - secrete HCl (hydrochloric acid) & pepsin to help with chemical digestion. Mechanical digestion also takes place here with the churning. Liver - have over 500 functions!!! - produces bile to help digestion fat. gall bladder - storage tank for the bile. Villi – Found in small intestines to absorb nutrients and water. large intestines / colon. Water is absorbed here & enters the bloodstream. The remaining is prepared to leave the body as waste. rectum and anus– a short tube and opening where solid waste is stored and eliminated from the body. Interactive Which type of digestion is the following? 1. Chewing a saltine? 2. Saliva breaking the saltine down into molecules of glucose? 3. Your tongue breaking pieces of a hamburger apart? 4. Pepsin (an enzyme) & HCl in your stomach breaking the hamburger into amino acids? Journey Thru the Digestive System Of a Toddler 21 Minutes