The Digestive System Food, Food, Food!!!!!!

Function Break down food taken in to the body Chemical digestion Mechanical digestion Absorb food that has been broken down Absorb water that is taken in to the body Eliminate indigestible waste

Components http://www.argosymedical.com/Digestive/samples/animations/Sherwood%20Swallowing/index.html Mouth Teeth – mechanically break down food Salivary glands – saliva chemically breaks down food – contains enzyme amylase to break down starch Tongue – mixes food with saliva and pushes to the pharynx to be swallowed Swallowing – food passes through the pharynx epiglottis closes over trachea food enters esophagus

Components Esophagus Stomach tube that passes food from the pharynx to the stomach lined with smooth muscle – moves food by waves of contractions called peristalsis Stomach Hydrochloric acid – continue chemical digestion Smooth muscle of stomach contracts and relaxes to continue mechanical digestion It takes 2 – 4 hours for food to pass through the stomach to the small intestine Chyme – lump of food that leaves the stomach

Components Liver – Works to make bile. Bile is used to break down fats in the small intestine. Gall Bladder – where bile is stored until needed Pancreas – secretes enzymes to continue the chemical digestion of food

Components Small Intestine Large Intestine Tube that leads from the stomach to the large intestine Chemical digestion finishes Minerals and nutrients are absorbed It takes 3 – 6 hours for chyme to pass through the small intestine Large Intestine Tube that connects the small intestine to the anus Remaining water is absorbed from the chyme

Components Anus Opening through which waste is removed from the digestive system It takes 24 – 72 hours for food to move through the entire digestive system http://www.argosymedical.com/Digestive/samples/animations/Digestion/