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BILL NYE: BLOOD AND CIRCULATION 1. The “lub” in your heart beat is the _big______ ____push______ , where the chambers of the heart are contracting. 2. The “Dub” in your heart beat is the _Reloading_____ __push_______, where the chambers of the heart are filling with blood. 3. As the blood goes away from the heart blood vessels get _____smaller__________. 4. The body used blood to carry: a. food b. oxygen c. waster 5. When blood vessels get squeezed what happens to your foot? Falls asleep 6. When the right side of your heart squeezes, blood goes to your ___lungs________. 7. When the left side of your heart squeezes, blood goes to your __body___________. 8. What volume of blood is white blood cells? 5 mL 9. The virus HIV attacks what cells? Immune cells, white blood cells, T-cells 10. How long do your white blood cells last in your body before new ones are made? 2 weeks 11. How long do you red blood cells last in your body before new ones are made? 4 months 12. How many times a day does your blood go through your body? 100,000 13. Capillaries are so small that blood cells have to travel _single file_________through them. 14. The top number of your blood pressure is the “ __lub___” 15. The bottom number of you blood pressure is the “ _dub______” 16. When you’re watching TV, how long does it take for your blood to travel through your body? 35-40 seconds 17. When you’re exercising, how long does it take for your blood to travel through your body? 10 seconds 18. How much does the average heart weigh? 300g 19. How many liters a day does your heart pump through your body? 7,000 liters 20. Where are blood cells made? Bone marrow