05 the heart 2011

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05 the heart 2011

  1. 1. The Heart
  2. 2. Superior vena cava inferior vena cava
  3. 3. Superior vena cava inferior vena cava Right atrium Tricuspid valve
  4. 4. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle
  5. 5. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
  6. 6. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
  7. 7. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery LUNGS OXYGENATE THE BLOOD
  8. 8. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
  9. 9. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Pulmonary vein
  10. 10. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle
  11. 11. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
  12. 12. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
  13. 13. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Left ventricle Aorta Septum Mitral valve Bicuspid valve Aortic valve
  14. 14. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
  15. 15. atrioventricular valve atrioventricular valve semilunar valve semilunar valve
  16. 16. Prosthetic Valves
  17. 17. The Heart
  18. 18. The Heartbeat
  19. 19. Atrioventricular node Ventricles Atria Body/Lungs Atrioventricular Sinoatrial node Atria Ventricles Ventricles Semilunar SYSTOLE DIASTOLE The Heartbeat
  20. 20. Blood Pressure: Measure of force of blood in arterial wall Normal blood pressure Sphygmomanometer The Heartbeat: Blood Pressure SYSTOLIC pressure DIASTOLIC pressure 120 80
  21. 21. Heart disorders <ul><li>Arrhythmia: Heart beats irregularly </li></ul><ul><li>Arises from problems with the electrical activity of the heart </li></ul><ul><li>Treatment may include implanting an artificial pacemaker or small defibrillator </li></ul>
  22. 22. Heart disorders Ventricular fibrillation: Uncoordinated contraction of ventricles. This form of severe arrhythmia can be fatal, and is commonly identified in cardiac arrest patients.
  23. 23. Heart disorders Heart murmurs: The heart makes extra sounds due to narrowing or leaking valves, or abnormal passages for blood flowing into or near the heart.
  24. 24. Heart disorders Hypertension: High blood pressure ( 140/90 or higher ). Prolonged high blood pressure damages the heart and blood vessels . Heart must pump harder, and over time the heart muscles expand , causing them to weaken . They may also thicken . Artery walls may tear and speed up atherosclerosis due to vessel injury.
  25. 25. Heart disorders Congenital heart defect: Defect of the structure of the heart and vessels , present at birth . Example: A septal defect is a hole in the septum , which allows oxygenated and deoxygenated blood to mix. 9 out of 1000 people are born with congenital heart defects.
  26. 26. Heart disorders <ul><li>Heart failure: </li></ul><ul><li>The heart cannot pump blood efficiently because: </li></ul><ul><li>It cannot fill with enough blood </li></ul><ul><li>OR </li></ul><ul><li>2) Does not pump the blood with enough force </li></ul><ul><li>A heart transplant may be required. </li></ul>

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