Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
The Digestive System Digestion process of making food usable by breaking it down using enzymes Enzymes proteins made by the body that make specific reactions occur at a faster rate The Mouth Teeth break the food down mechanically Saliva helps break down the food chemically Tongue pushes food around and towards back of throat for swallowing Esophagus & Epiglottis Esophagus Stretchy pipe that leads from the back of the throat to the stomach Epiglottis flap that covers the windpipe to avoid food going into your lungs 4-layer Basic Plan in the Wall of the Alimentary Canal = Alimentary Canal Digestive Tract Peristalsis Peristalsis is a distinctive pattern of smooth muscle contractions that propels foodstuffs distally through the esophagus and intestines The Stomach Stretchy sack that is shaped like a “J” Has strong muscles and hydrochloric acid that break down the food and pepsin that b/d proteins into amino acids Microscopic Anatomy of the Stomach The Small Intestine Small intestine about 22’ long Enzymes- bile from the liver concentrates fats and from the pancreas, trypsin continues to b/d proteins, amylase b/d carbohydrates and lipase b/d fats nutrients diffuse from small intestine to blood Anatomy of the Small Intestine Regions of the Small Intestine Liver, Gall Bladder, & Pancreas Liver Gall bladder makes bile 1st place that nutrients go from small intestine so harmful substances can be filtered out holds bile Pancreas makes enzymes to help digest fats and protein Gross Anatomy of the Pancreas The End of the Tract Large Intestine About 5’ long, absorbs salts, vitamins, water and minerals unused parts of food move through to be excreted from the body Appendix Rectum no purpose solid waste stays here until you have a bowel movement Anus opening that solid waste is pushed through THE FINAL END OF THE TRACT