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