1. Scavenger Hunt Circulatory System

2. Takes blood away from the heart. heart

3. the heart has ____ chambers. artery

4. Heart  ____  heart  lungs  heart 4

5. Answer to #3 on pg. 967 body

6. Small blood vessels aorta

7. Protein that binds oxygen to red blood cells capillaries

8. Upper chambers of the heart hemoglobin

9. Takes blood back to the heart atria

10. Answer to Question 4 on pg. 969 vein

11. Lower chambers of the heart mucus

12. Strongest chamber of the heart ventricles

13. Average human heart beats per minute during exercise Left ventricle

14. Large flat muscle that helps with breathing 200

15. Part of brain that controls breathing diaphragm

16. A disease caused by smoking Medulla Oblongata

17. What happens between capillaries and cells Lung cancer

18. Why cells need oxygen 0 2 CO 2

19. Cells break down this molecule during respiration Cellular respiration

20. Pump of the circulatory system glucose