S2 Heart and Lungs

3. This organ is responsible for pumping blood around your body
5. The name of the blood vessels that contain valves
6. The number of chambers the heart has
7. This is one factor that can effect heart and lung health
11. Another term for the air sacs in your lungs
13. When you do this the diaphragm moves up and the rib cage gets smaller.
14. The side of the heart with the thicker muscular wall
16. The name given to blood without oxygen in it
17. Tidal volume and vital capacity can be measured using this piece of equipment
18. The name of the structures that prevent the backflow of blood

1. What is the heart made of?
2. The name of the thinnest blood vessels
4. The names of the structures that the bronchi in the lungs branch out into
7. The name of the blood vessels that carries blood away from your heart
8. The name of the gas that moves from the air sacs into the blood vessels when you breathe in
9. The name of the muscle at the bottom of the ribs used during breathing
10. Another term for your windpipe
12. The name given to blood returning to the heart from the lungs
14. This organ is known as "the organ of gas exchange"
15. This is another factor that can effect heart and lung health