G5&6 Science Spring Final exam

5. Platelets in your blood help to ______ the blood to stop the bleeding when you get a cut.
7. You should check the _________ pulse of someone who looks dead to check if they’re still alive.
15. The blood is recharged when CO2 and O2 is _________.
16. Blood goes in two ____________ as it beats as the heart has two sides.
18. When you exercise, your heart beats about twice as fast and pumps about _____ times the amount of blood.
19. The contraction of the heart muscle is controlled by ________ ________.
21. The fluid part of blood that contains water, salts and nutrients.
22. These carry deoxygenated blood from the body to the heart.
23. To release digested nutrients, cells need ________.
24. These carry oxygen rich blood away from the heart.

1. Heart muscles have the ability to start and _________ their own electrical impulses.
2. These small blood vessels take blood to the muscles.
3. Co2 and other things no longer needed.
4. There are four ________ in our heart.
6. Tiny air sacs are tiny chambers where ______ passes into the blood.
7. The part of blood that helps stop it flowing.
8. Smoking may damage the airsick in your lungs because they are very ____________.
9. The two main branches of the trachea leading to the lungs.
10. Blood enters the heart from the body on the ______ side of the heart.
11. The man died after he had a ________ arrest after playing video games for too long.
12. Taiwan has a _________ of roads like the blood vessels in our bodies.
13. The heart is ________ of special cardiac cells.
14. The 3 kinds of tubes that carry blood are called blood _________.
17. Air passes through your nose and mouth and enters your _________.
20. Blood is a _________, it is like water with other things in it.