1. Chambers

2. Atria
Room or entrance left atrium right atria it’s where the blood comes in

3. Right Atrium
receives blood because it’s on the right side it has no oxygen

4. Left Atrium
Takes in oxygenated blood to feed the heart with its oxygen.

5. Ventricles
“Belly” make up most of the hollowness of the heart. They push the blood out of the heart.

6. Right Ventricle
- sends blood without oxygen without oxygen to the lungs

7. Left Ventricle
Sends the oxygenated blood everywhere else

8. Valves
there is four they prevent blood from back flowing.

9. Tricuspid Valve
tri means 3 cusp means points it prevents blood from going to the right ventricle into the right atrium.

10. Pulmonary Valve
Pulmo lungs makes sure the blood doesn’t go back into the right ventricle

11. Mitral valve
Prevents blood from going back from the left ventricle into the left atrium.

12. Aortic Valve
Prevents blood from coming back into the left ventricle once it pushes it out.

13. Veins
carry blood to the heart

14. Vena Cavas
- carry blood to the right atrium.