cardiovascular topic 1-4.txt

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cardiovascular topic 1-4.txt
2013-12-09 09:58:19

cardio for 102
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  1. List the two circuits of blood flow found in the body
    systemic circuit, pulmonary circuit
  2. This circuit sends blood from the heart to the longs in order to oxygenate the blood
    pulmonary circuit
  3. This circuit sends oxygenated blood to all parts of the body
    systemic circuit
  4. What are the three coverings of the heart
    fibrous pericardium, visceral pericardium, parietal pericardium
  5. This layer of the heart consist of an outer fibrous bag that surrounds a more delicate doubled layer serous membrane
    fibrous pericardium
  6. The inner most layer that surrounds the heart is the
    visceral pericardium
  7. This layer of the heart in just interior to the fibrous pericardium, and external to the visceral pericardium
    parietal pericardium
  8. This is the tough protective sac composed of dense connective tissue which anchors the heart in the chest cavity
    fibrous pericardium
  9. What is the space between the visceral and parietal layers of pericardium?
    pericardial cavity
  10. What is the function of the fluid in the pericardial sac?
    reduce friction during heart beating
  11. What are the three layers that the heart is composed of?
    epicardium, myocardium, endocardium
  12. This layer of the heart protects the heart by secreting serous fluid which reduces friction, and is the outer layer of the heart
  13. This layer of the heart contracts to pump blood from the heart chambers, and makes up the bulk of the heart tissue
  14. This layer of the heart forms the protective inner lining of the valves, and chambers of the heart
  15. What is the difference between an active chamber and a passive chamber?
    an active chamber actively pumps blood out of the chamber, a passive chamber has most of the blood passively move through the chamber
  16. What are the two active chambers called?
  17. What are the two passive chambers called?
  18. What are the two receiving chambers?
    the atria
  19. What are the two pumping chambers?
    the ventricles
  20. What are the two major types of valves found in the heart? Semilunar and atrioventricular (AV) valves
  21. Where are the semilunar valves located, and what are their names?
    pulmonary semilunar located at the base of the pulmonary trunk, and Aortic semilunar valves located at the base of the aorta
  22. Where are the AV valves located and what are their names?
    tricuspid valve is located between the right atria and right ventricle, and the bicuspid valve located between the left atria and left ventricle
  23. What are the small ear like projections which extend from the atria which allow for a slight increase in atrial volume?
  24. What is the name of the hole between the atria and ventricles?
    atrioventricular orifice
  25. What is the function of the tricuspid valve?
    it prevents blood from reentering the right atria when the right ventricle contracts
  26. What is the function of the bicuspid valve?
    it prevents blood from reentering the left atria when the left ventricle contracts
  27. What is the function of the pulmonary semilunar valve?
    it prevents blood from flowing back into the right ventricle after it relaxes
  28. What is the function of the pulmonary semilunar valve?
    it prevents blood from flowing back into the left ventricle when it relaxes
  29. What are the strong fibrous strings which are attached to mounds of muscle in the heart chamber and functions to prevent the AV valves from blowing back into the atria when the ventricle contracts?
    chordae tendineae
  30. What is the name of the mounds of muscle tissue in the heart chambers which the cords are anchored into?
    papillary muscles
  31. What is a common name for the bicuspid valve?
  32. In the correct order, list the path of blood through the heart beginning with the superior vena cava
    superior venacava, right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, pulmonary trunk, pulmonary arteries, lungs, pulmonary veins, left atrium, bicuspid valve, left ventricle, aortic semilunar valve, aorta