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Digestive System Mind Map Name _____________________ Date ___________ Period _____ Types of Digestion Mechanical digestion (MD) - physical change 3 Functions break food into usable nutrient molecules molecules are absorbed into the blood eliminates waste * food is broken down into smaller pieces Chemical digestion (CD) - chemical change * food is broken down into different chemical molecules Mouth teeth cut food into small pieces (MD) saliva breaks down starch (CD) epiglottis covers the trachea to prevent food from entering the lungs Esophagus Liver liver makes bile gallbladder stores bile bile breaks down fat molecules (MD) connects mouth to stomach peristalsis moves food through DS Gallbladder Small Intestine Stomach duodenum makes three enzymes that break down carbohydrates, proteins & fats (CD) villi Pancreas Large Intestine duodenum— most chemical digestion absorption through villi churning motion – blender (MD) pepsin breaks down protein (CD) removes water from waste eliminates waste from body
