1. 5 parts of the circulatory system
Blood
Arteries
Veins
Capillaries
heart

2. Function of the circulatory system
Carry materials such as oxygen and dissolved nutrients to all cells and carry waste such as carbon dioxide away from all cells

3. Arteries
Carries blood away from the heart
They are thicker and stretch more than veins because they are under more pressure from the blood

4. veins Carry blood to the heart and have less pressure

5. Capillaries
Connect arteries and veins
They are one cell thick and this is where nutrients and gasses such as oxygen and carbon dioxide enter and leave cells

6. 4 parts of blood Red Blood cells White blood cells plasma platelets

7. Red blood cells Carry gases such as oxygen

8. White blood cells Fight infections

9. Platelets
Clot Blood

10. plasma Liquid part of blood Carries dissolved nutrients

11. Function of heart valves
To keep blood flowing in one direction and to stop the blood from going backwards

12. Chambers of the heart Atrium- top Ventricles- bottom

13. Blood types A B AB- can receive any blood O-can give to any blood type