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Download 32.2 Digestive System The digestive system breaks down food into
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32.2 Digestive System The digestive system breaks down food into simpler molecules. 32.2 Digestive System Mouth Teeth- break down food Tongue- push food around and down Saliva- moistens food, contains amylase (enzyme that breaks down starches into sugars) mouth 32.2 Digestive System Esophagus • Peristalsis- contractions that move food to stomach esophagus • Cardiac Sphincter- prevents contents from flowing back 32.2 Digestive System Stomach • Large muscular sac • Very acidic • Pepsin- enzyme that breaks down proteins • Mucus protects wall Stomach 32.2 Digestive System – Pancreas- helps digest fat and protein – bile from the liver/gallbladder helps digest fats liver bile Pancreas stomach bile chyme bile gallbladder duodenum pancreas enzymes 32.2 Digestive System Small Intestine • Lined with villi / microvilli - finger like projections • Nutrients are absorbed through wall into blood stream small intestine 32.2 Digestive System Large Intestine (Colon) • Removes water • Bacteria help absorb vitamin K large intestine 32.2 Digestive System Rectum/Anus • Eliminates waste rectum/anus
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