Pathway of Blood Through the Heart

2nd step

Blood enters right atrium, which is the first chamber of the heart.

1st step

Blood enters the heart through the superior vena cava and interior vena cava.

8th step

Blood gets pushed out of left ventricle, and goes through the aorta into the rest of the body.

6th step

Blood goes into the right and left pulmonary veins, and into the left atrium.

7th step

From here, blood passes through mitral valve to get into the left ventricle.

3rd step

It then goes through the tricuspid valve, and into the right ventricle.

4th step

Right ventricle pushes blood into pulmonary valve, through either of the pulmonary arteries.

5th step

The pulmonary arteries empty blood into the lungs, to get oxygenated and rid of the carbon dioxide.