What is the pathway of blood flow in the heart?

Step 9

Blood returns to the heart from the body via two large blood vessels called the superior vena cava and the inferior vena cava. This blood carries little oxygen, as it is returning from the body where oxygen was used.

Step 7

It drops through the mitral valve into the left ventricle.

Step 5

It then leaves the lungs to return to the heart through the pulmonary vein.

Step 6

The blood enters the left atrium.

Step 1

The blood first enters the right atrium. from the superior and inferior vena cava

Step 2

The blood then flows through the tricuspid valve into the right ventricle.

Step 8

The left ventricle then pumps blood through the aortic valve and into the aorta. The aorta is the artery that feeds the rest of the body through a system of blood vessels.

Step 4

The pulmonary artery carries blood to the lungs where it "picks up" oxygen.

Step 10

The vena cavas pump blood into the right atrium and the cycle begins all over again.

Step 3

When the heart beats, the ventricle pushes blood through the pulmonic valve into the pulmonary artery.