Heart info

Card Set Information

Heart info
2012-11-15 20:52:38
heart anatomy Farr SLCC

Study guide for Test 3
Show Answers:

  1. What the heart wall layers from superficial to deep?
    • Epicardium- visceral paricardium epi+ loose connective tissue + adipose cells
    • Myocardium-cardiac muscsle tissue arranged in bundles
    • Endocardium- simple squamous epithelium layer & loose connective tissue lining inside of heart and forming valves
  2. What are the 3 heart tissue layers?
    • Fibrous pericardium
    • Parietal pericardium
    • Visceral pericardium
  3. What is the fibrous pericardium?
    What does the fibrous pericardium do?
    • Outer layer
    • (1)  dense irregular connective tissue
    • (2)  sticks to the diaphragm inferiorly
    • (3)  fuses with roots of ‘great vessels’ superiorly
    • (4)  stabilizes the position of the heart 
  4. What makes up the serous pericardium (membrane)?
  5. (1)  outer, parietal layer (parietal pericardium), is continuous with
    • (2)  inner, visceral layer (visceral pericardium), covers the heart surface; also called epicardium
    • (3)  between the two layers is a potential space called the pericardial cavity; the cavity contains a little serous fluid to prevent friction as the heart moves 
  6. What is pericarditis?
    inflammation of pericardium
  7. What defines capillaries?
    • Capillaries 
    • have the smallest diameter
    • gas & nutrient exchange occur here
    • on the arterial side contain oxygenated blood
    • on the venous side contain deoxygenated blood
  8. What defines veins?
    • carry blood back to the heart
    • tend to have large diameters
    • walls are not as muscular as arteries
    • lower pressure than arteries
    • blood may be oxygenated (pulmonary veins or pulmonary circuit) or not (systemic circuit, superior or inferior vena cave)
  9. What seperates the upper chambers of the heart?
    Interatrial septum
  10. What seperates the lower chambers of the heart?
    Interventricular septum
  11. What is the anterior external landmark separating the ventricles?
    anterior interventricular sulcus
  12. What is the posterior external landmark separating the ventricles?
    posterior interventricular sulcus
  13. What is the external landmark separating the atria from ventricles?
    coronary sulcus or atrioventricular sulcus 
  14. Where does the right atrium receive blood from?
    • coronary sinus
    • inferior vena cava
    • superior vena cava
  15. Where does the right ventricle receive blood?
    from the right atrium through the tricuspid valve
  16. Blood leaves the right ventricle through which valve?
    Pulmonary semilunar valve
  17. Left atrium receives blood from where?
    • right pulmonary vein
    • left pulmonary vein
  18. Blood leaves the left atrium through this valve?
    bicuspid or mitril valve
  19. What is unique about the left ventricle?
    thickest myocardium 
  20. Blood leaves the left atrium through this valve?
    Aortic semilunar valve
  21. What are the 2 functions of the valves in the heart?
    • pushed open by pressure
    • prevent back flow
  22. What were some of the valve disorders discussed in class?
    • Valve prolapse
    • Stenosis
    • Heart murmur
  23. What are the great vessels of the right heart?
    • Superior & Inferior Vena Cava
    • Pulmonary Trunk that is divided into the left and right pulmonary arteries
  24. What are the great vessels of the left heart?
    • 4 Pulmonary Veins
    • Ascending Aorta
  25. What are the first branches off of the aorta?
    • Right Coronary artery
    •     anterior interventricular artery 
    •     circumflex artery
    • Left Coronary artery
    •    marginal artery
    •    posterior interventricular artery