g7 ch7.1 transport and defense
TRANSCRIPT
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• Organ systems– Groups of organs that work together and
perform a specific task– Organ systems work together to maintain
homeostasis
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Digestive System
• Org
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Digestive System
1. mouth (saliva + grinding)
2. Esophagus
3. Stomach
4. Small intestine (digestion + absorption)
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Liver and Pancreas
• Help the small intestine in breaking down food.• Liver make bile and the pancreas creates more
enzymes
• The small intestine absorbs nutrients
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Liver and Pancreas
• Nutrients: Parts of the food used by the body to grow and survive.
• Different people need different amounts of nutrients
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Excretory System
• Large intestine (colon) -> Rectum (exit)
• Removes solid, liquid, and gas waste materials
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Excretory System
• Lungs
• Skin
• Liver
• Kidneys
• Rectum
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Nutrition Value
• A calorie is the amount of energy it takes to raise the temperature of 1 kg of water by 1 degree Celsius
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