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Heart anatomy

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Heart anatomy

  1. 1. Construct your interactive notes• 6pages• Chapter 12: Heart and Chapter 13: Blood Vessels• Name, period, seat #• Color picture
  2. 2. Heart Anatomy, Part 1 (pg 2)
  3. 3. Heart Anatomy (pg 2)• Heart: muscular pump that provides the force necessary to circulate blood to all tissues in the body
  4. 4. Heart Anatomy (pg 2)• Heart: muscular pump that provides the force necessary to circulate blood to all tissues in the body• Pumps about 5 liters of blood per minute
  5. 5. Location• Between the lungs. Rests on the diaphragm. Most superior portion is at the level of the second rib
  6. 6. Location• Between the lungs. Rests on the diaphragm. Most superior portion is at the level of the second rib• 2/3 of the heart is to the left of the body midline
  7. 7. Location• Between the lungs. Rests on the diaphragm. Most superior portion is at the level of the second rib• 2/3 of the heart is to the left of the body midline• Heart is about the size of a closed fist
  8. 8. Coverings• Heart is covered by a loose two-layered sac called the pericardium
  9. 9. Coverings• Heart is covered by a loose two-layered sac called the pericardium• Fibrous pericardium: tough, protective outer layer.
  10. 10. Coverings• Heart is covered by a loose two-layered sac called the pericardium• Fibrous pericardium: tough, protective outer layer.• Parietal pericardium: Thin inner layer. Produces pericardial fluid for lubrication
  11. 11. Heart Wall• Called the myocardium and made of cardiac muscle
  12. 12. Heart Wall• Called the myocardium and made of cardiac muscle• Cells are connected by intercalated disks
  13. 13. Heart Wall• Called the myocardium and made of cardiac muscle• Cells are connected by intercalated disks• Myocardium is supplied with oxygenated blood by the coronary arteries, which branch off the aorta
  14. 14. Heart Wall• Called the myocardium and made of cardiac muscle• Cells are connected by intercalated disks• Myocardium is supplied with oxygenated blood by the coronary arteries, which branch off the aorta• Blockage of coronary artery = heart attack
  15. 15. Chambers of the HeartAtria: thin-walled chambers that receive blood from veins.
  16. 16. Chambers of the HeartAtria: thin-walled chambers that receive blood from veins.Ventricles: thick-walled chambers that forcefully pump blood
  17. 17. 1. Right Atrium: receives deoxygenated blood from the superior and inferior vena cava
  18. 18. 1. Right Atrium: receives deoxygenated blood from the superior and inferior vena cava2. Right Ventricle: pumps blood through the pulmonary arteries to the lungs, where it becomes oxygenated
  19. 19. 1. Right Atrium: receives deoxygenated blood from the superior and inferior vena cava2. Right Ventricle: pumps blood through the pulmonary arteries to the lungs, where it becomes oxygenated3. Left Atrium: receives oxygenated blood from the lungs via the pulmonary veins
  20. 20. 1. Right Atrium: receives deoxygenated blood from the superior and inferior vena cava2. Right Ventricle: pumps blood through the pulmonary arteries to the lungs, where it becomes oxygenated3. Left Atrium: receives oxygenated blood from the lungs via the pulmonary veins4. Left Ventricle: Pumps oxygenated blood to the body via the aorta. Thickest, strongest chamber
  21. 21. Heart Dance
  22. 22. Heart Dance• RIGHT Atrium, Ventricle LUNGS!
  23. 23. Heart Dance• RIGHT Atrium, Ventricle LUNGS!• LEFT Atrium, Ventricle BODY!
  24. 24. Heart Anatomy, Part 2 (pg 4)
  25. 25. Valves of the HeartValves prevent blood from flowing backward
  26. 26. Valves of the HeartValves prevent blood from flowing backward1. Atrioventricular (AV) valves: Between atria and ventricles
  27. 27. Valves of the HeartValves prevent blood from flowing backward1. Atrioventricular (AV) valves: Between atria and ventricles• Anchored by strings called the chordaetendineae, which prevents the valve from letting blood back into the atria
  28. 28. Valves of the HeartValves prevent blood from flowing backward1. Atrioventricular (AV) valves: Between atria and ventricles• Anchored by strings called the chordaetendineae, which prevents the valve from letting blood back into the atria• Right = tricuspid valve
  29. 29. Valves of the HeartValves prevent blood from flowing backward1. Atrioventricular (AV) valves: Between atria and ventricles• Anchored by strings called the chordaetendineae, which prevents the valve from letting blood back into the atria• Right = tricuspid valve• Left = bicuspid (mitral) valve
  30. 30. 2. Semilunar Valves: located at the bases of blood vessels that carry blood from the ventricles
  31. 31. 2. Semilunar Valves: located at the bases of blood vessels that carry blood from the ventricles• Each valve has 3 cup-like cusps. When blood flows back toward the ventricles, the cups fill with blood, causing the valve to close
  32. 32. 2. Semilunar Valves: located at the bases of blood vessels that carry blood from the ventricles• Each valve has 3 cup-like cusps. When blood flows back toward the ventricles, the cups fill with blood, causing the valve to close• Pulmonary SL valve: at exit of right ventricle
  33. 33. 2. Semilunar Valves: located at the bases of blood vessels that carry blood from the ventricles• Each valve has 3 cup-like cusps. When blood flows back toward the ventricles, the cups fill with blood, causing the valve to close• Pulmonary SL valve: at exit of right ventricle• Aortic SL valve: at exit of left ventricle
  34. 34. Pathway of Blood• Hand-written notes

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