The heart 2
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  • 1. THE HEART
  • 2. THERE IS ONE MAIN FUNCTION OF THE HEART
    • IT IS ESSENTIAL FOR PUMPING BLOOD THROUGHOUT THE BODY WITHOUT IT WE WOULD NOT GET THE OXYGEN WE NEED TO SURVIVE
  • LOCATION OF THE HEART
    Left of the midline posterior to sternum in the mediastinum
  • 3. The heart consists of four chambers
    • Right atrium
    • 4. Left atrium
    • 5. Right ventricle
    • 6. Left ventricle
  • Looks like a lot to learn.
  • 7.
  • 8. Right atrium
    The right atrium receives blood from the Superior and Inferior Vena Cava, this is deoxygenated blood
    The blood flows from there into the left ventricle through the tricuspid valve. Valves are important they keep blood from flowing back into the heart
  • 9. Left Ventricle
    • Blood in the left ventricle is still deoxygenated
    • 10. Blood from the left ventricle is pushed out of the heart into the pulmonary artery where it is transported to the lungs
    • 11. There is a valve between the pulmonary artery and the left ventricle-pulmonary valve
    • 12. In the lungs oxygen is received into the blood
  • Follow the arrows to see how blood flows through the heart.
  • 13. Right atrium
    • After the blood has oxygen, it is returned to the heart through the pulmonary veins into the right atrium.
    • 14. In right atrium blood is pushed into the right ventricle through the bicuspid valve.
  • A closer look at the valves
  • 15. Right Ventricle
    • The right ventricle receives oxygenated blood from the right atrium
    • 16. From here blood is pushed out to the body through the aorta.
  • Cardiac muscle tissue
  • 17. LAYERS OF THE HEART
    Epicardium: outermost layer of the heart
    Myocardium: is the heart muscle
    Endocardium: innermost layer made up of simple squamous epithelium
  • 18.
  • 19. What structures can you identify?
  • 20. Blood flow through the heart
  • 21.
  • 22. Autonomic innervation of the heart
  • 23. The end(hope your heart is still pumping)