G7 ch7.1 transport and defense
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The document discusses the digestive and excretory systems. The digestive system breaks down food through the mouth, esophagus, stomach, small intestine, liver and pancreas. The small intestine absorbs nutrients while the liver and pancreas help break down food. The excretory system includes the large intestine, rectum, lungs, skin, liver, kidneys and rectum which remove waste from the body. Nutrition is also discussed, defining a calorie as a unit of energy.
G7 ch7.1 transport and defense
- 2. • Organ systems – Groups of organs that work together and perform a specific task – Organ systems work together to maintain homeostasis
- 4. Digestive System 1. mouth (saliva + grinding) 2. Esophagus 3. Stomach 4. Small intestine (digestion + absorption)
- 6. 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
- 7. Liver and Pancreas • Nutrients: Parts of the food used by the body to grow and survive. • Different people need different amounts of nutrients
- 8. Excretory System • Large intestine (colon) -> Rectum (exit) • Removes solid, liquid, and gas waste materials
- 9. Excretory System • Lungs • Skin • Liver • Kidneys • Rectum
- 10. Nutrition Value • A calorie is the amount of energy it takes to raise the temperature of 1 kg of water by 1 degree Celsius