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Download Chapter 8 – Your Body Systems Lesson 4 – The Digestive System
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Ch. 8, L4 Chapter 8 – Your Body Systems Lesson 4 – The Digestive System digestion the process of breaking down food into a form your body can use nutrients substances in food that the body needs to work properly Food and Nutrients mouth pharynx and esophagus • digestive system starts working as soon as food enters the mouth • most digestion occurs in the stomach and small intestine • digestion frees the nutrients from the food stomach • the blood absorbs the nutrients small intestine • the blood delivers the nutrients throughout the body large intestine • the cells use nutrients to grow, repair themselves, and get energy anus Ch. 8, L4 Solid Waste • the large intestine absorbs water and salts from the remaining food material • the parts of the food the body can’t use becomes waste • the waste passes through the large intestine and leaves through the anus Non-digestive Waste Removal • cells produce waste products • kidneys mix waste with water to form urine • respiratory system leases other waste products - carbon dioxide is a waste product - blood carries the gas to the lungs - released into the air • sweat glands remove salt and water by sweating
