Real human heart pictures

The Flow of Blood

By sharus1
  • Step 1

    Step 1

    Deoxygenated blood comes to the heart from the upper body through the superior vena cava and from the lower body through the inferior vena cava.
  • Step 2

    Step 2

    The blood flows to the right atrium.
  • Step 3

    Step 3

    The blood flows from the right atrium to the tricuspid valve.
  • Step 4

    Step 4

    The blood flows out from the tricuspid valve to the right ventricle.
  • Step 5

    Step 5

    The blood from the right ventricle then flows to the pulmonary valve.
  • Step 6

    Step 6

    Blood from the pulmonary valve flows into the pulmonary artery.
  • Step 7

    Step 7

    The blood from the pulmonary artery flows to the right and left to go to the lungs to get oxygen.
  • Step 8

    Step 8

    Blood coming from the lungs then flows to pulmonary veins to get back to the left side of the heart.
  • Step 9

    Step 9

    The blood then flows from the pulmonary vein to the left atrium.
  • Step 10

    Step 10

    Before the blood can get to the left ventricle it has to flow through the bicuspid valve.
  • Step 11

    Step 11

    Blood flows from the bicuspid valve into the left ventricle.
  • Step 12

    Step 12

    From the left ventricle blood flows to the aortic valve.
  • Step 13

    Step 13

    The blood then flows to the aorta from the aortic valve.
  • Step 14

    Step 14

    After the blood leaves the aorta, fully oxygenated, it flows to all parts of the body so they can get the blood they need to function.