He we go, how many did you get wrong?
1. Lungs
2. Nitrogen narcosis
3. Squeezing the nose and blowing to equalize the ears
4. Nitrogen bubbles
5. Red blood cells
6. A blockage in the circulatory system
7. The central nervous system
8. Hole in the heart
9. 16 breathes a minute
10. In the venous system
11. 4.5 liters
12. 4%
13. A high carbon dioxide level in the blood
14. It allows us to equalize our ears
15. 25-35 meters
16. Headache, flushed face and lips
17. The carotid pulse
18. Muscle
19. Nitrogen Narcosis
20. Numbness and pins and needles in the legs