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Published byGladys White Modified over 9 years ago
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The Digestive System
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What is the function of the digestive system? Convert and break down foods into simpler molecules that can be absorbed by the body.
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Mouth Chemical /physical breakdown of food Masticate-chew Amylase breaks down carbs
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Esophagus Epiglottis prevents food from entering trachea Muscular tube that connects your mouth and your stomach Peristalsis moves food to the stomach
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Stomach Muscular sac Mechanical/chemical Muscles contract and churn food+digestive juices chyme HCl,Pepsin digests protein No digestion of carbs
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Small Intestine 20 ft Food stays 4-8 hrs. Absorption of nutrients
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Villi fingerlike projections which line the walls of s.intestine/absorbs nutrients
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Large Intestine 5 ft. Water absorption Indigestible materials stay 10-12 hrs. Leads to rectum/anus
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Liver Biggest organ Detoxifies poisons
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Pancreas Secretions neutralize stomach acid Secretes insulin, helps cells absorb glucose
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Healthy Habits Eat food high in fiber Drink water
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hw Comic Strip
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