Card Set Information

2011-10-09 16:24:41

Test 2
Show Answers:

  1. How much does the heart weigh?
  2. What is the shape of the heart?
    Hollow Cone shaped
  3. Where are the origins of the heart?
    • The top points to the right shoulder, and is at the 2nd rib
    • The apex points towards the left hip and is at the 5th intercostal
  4. What is the angle of lewis/ sternal angle?
    Where the 2nd rib articulates with the breast bone
  5. What is the pericardium made of?
    A fibroserous sac where is made of fibrous tissue and serous membrane
  6. What is different about the fibroserous sac?
    It is not expandable and it anchors the pericardium to the surrounding area
  7. What is pericardial friction rub?
    when there isn't enough pericarium and the visceral membrane rubs the parietal membrane
  8. What is Cardia Tamponade?
    when there is too much paricardial fluid around the heart
  9. What are the names of the layers of the heart?
    • Inner layer- Endocardium
    • Middle layer-Myocardium
    • Outer Layer- Epicardium
  10. What makes up the endocardium layer?
    • Simple Squamous Epithelium
    • Continues throughout the blood vessels that connect to the heart
    • It is continually bathed in blood
  11. What makes up the Myocardium Layer?
    • Made of Muscle
    • It needs a good blood supply, and is supplied by the coronary arteries
  12. What makes up the Epicardium Layer?
    The visceral layer of the serous paricardium
  13. Where does the lft coronary artery branch to?
    The circumflex Artery and the Anterior Intrerventricular Artery
  14. Where does the Right coronary Artery branch to?
    The Marginal Artery and the Posterior Interventricular Artery
  15. Where do the anterior Interventricular Artery and the Posterior Interventricular Artery meet?
    The Anastomoses
  16. What could cause askemia or a myocardial infarction?
    a black inthe Anterior Interventrticular Arty, Origin of the Right Coronary Artery or the Circumflex Artery by an Atheroma or a thrombus
  17. What are the Cardiac Veins and what is their job?
    • Great , Middle and Small
    • Bring blood to the coronary sinus
  18. What do cardiac veins do?
    Go to the coronary sinus, which brings blood to the Right Atrium of the Heart (deoxygenated hemoglobin), these veins drain from the myocardium
  19. What are the four chambers of the heart?
    • Right Atrium ( top right)
    • Left Atrium (top left
    • Right ventricle (bottom right)
    • Left Ventricle (bottom left)
  20. What is the function of the Superior Vena Cava and where does it articulate with the heart?
    • Drains venous blood from structures above the diaphragm
    • Vein opens into the Right Atrium
  21. What is the function of the Inferior Vena Cava and where does it articulate with the heart?
    • Drains venous blood from all structures below the diaphragm
    • Opening of the coronary sinus, brings venous blood from the myocardium
  22. What is the Interartial Septum?
    Wall that separates the Right Atrium from the Left Atrium
  23. What is contained in the Left Atrium?
    • All 4 pulmonary Veins
    • 2 from the left lung, 2 from the right lung
    • No muscles in this area
  24. What is contained in the Right Ventricle?
    • Trabeculae Carneae
    • Papillary Muscles
    • Tricuspid Valve
    • Chordae Tendineae
    • Pulmonary vlave
    • Interventricular Septum
  25. What is contained in the Left Ventricle?
    • Bicuspid Valve
    • Trabeculae Carneae
    • Papillary Muscles
    • Chordae Tendineae
    • Aortic Valve
  26. Which area(s) have thin walls and why?
    • The left and right Atrium
    • They are weak pumps, because they pump to the ventricles which are directly below them
  27. Which area has the 2nd most thickest wall and why?
    • The right ventricle
    • It pumps to the lungs, which are located near the heart
  28. Which area of the heart has the thickest walls and why?
    • The Left Ventricle
    • It pumps blood to the entire body
  29. What is the pulmonary and systemic circuit?
    Deoxygenate Blood > Right Venticle > Tricuspid > Right Ventricle > Pulmonary Valve > Pulmonary Veins > Lungs > Oxygenated Blood > Left Atrium > Bicuspid Valve > Left Ventricle > Aortic Valve > Rest of body