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The heart


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A quick introduction to the human heart

Published in: Education
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The heart

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