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Transcript
BACK IN CIRCULATION PAGES 126-129 1. Explain why the circulatory system is called a closed system. 2. How does our body offer the heart protection? 3. What are vessels that carry blood FROM the heart called (3 answers~ large to small vessels) 4. How long does it take one blood cell to enter the heart, move through the body and return to the heart? 5. How does the heart know when to beat? 6. Why is the heart considered to be composed of two pumps? 7. What are the upper chambers of the heart called? 8. What are the lower chamber of the heart called? 9. What is circulation called between the heart and lungs? 10. What is circulation called between the heart and the rest of the body? Not found in reading selection….. 11. Could the circulatory system work without the respiratory system? Explain your answer. 12. How does the circulatory system work with the digestive system? 13. How does the digestive system work with the respiratory system?
