CARDIOVASCULAR coronary arteries, heart actions

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Author:
mwinstom
ID:
252300
Filename:
CARDIOVASCULAR coronary arteries, heart actions
Updated:
2013-12-10 10:03:30
Tags:
profmwinston
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Description:
in support of ANP 102
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  1. The first two branches of the aorta are the?
    left and right coronary arteries.
  2.  This coronary artery is located in the atrioventricular groove between the left atrium and left ventricle and supplies blood to the walls of the left atrium and left ventricle.
    The circumflex artery
  3.  This coronary artery is located in the anterior interventricular groove and supplies blood to walls of both ventricles
    The anterior interventricular artery
  4.  This coronary artery is located the posterior interventricular groove and supplies the posterior walls of both ventricles
    The posterior interventricular
  5. This coronary artery is located along the lower border of the heart and supplies blood to the wall of the right atrium and right ventricle
    The marginal artery
  6. When is blood flow in coronary arteries the poorest and why?.
    During ventricular contraction because the contracting myocardium interferes with blood flow and the openings of the coronary arteries are partially blocked by cusps of the aortic valve
  7.  This vessel is an enlarged vein on the posterior surface of the heart.
    The coronary sinus
  8. What are the two divisions of the left coronary artery
    • 1. anterior interventricular artery
    • 2. Circumflex artery 
  9. What are the two divisions of the right coronary artery/
    • 1. Marginal
    • 2. posterior interventricular artery
  10. During this_____, the pressure within the heart chambers rises and falls which is what causes the valves to open and close as blood is pumped out of the heart
    a cardiac cycle
  11.  this term is used to describe when the heart muscle (chamber) is in relaxation.
    diastole
  12.  this term is used to describe when the heart muscle (chamber) is contracting
    systole
  13. About _______% of the blood flows passively from the atria into ventricles and the remaining blood is pushed into the ventricles when the atria contract.
    70%
  14. As ventricles contract, which valves close.
    the A-V valves
  15. During ventricular systole, RIGHT ventricular pressure increases and causes which valve to open
    the pulmonary semilunar valve
  16. During ventricular systole, the LEFT ventricular pressure increases causing which valve to open
    Aortic semilunar valve
  17. Where does the blood go from the right atria when it enters systole
    The right ventricle
  18. Where does the blood go from the right ventricle when the right ventricle contracts
    pulmonary trunk
  19. Into which chamber does the blood from the lungs return?
    Left atria
  20. Where does the blood go from the left atria when it contracts
    left ventricle
  21. where does the blood go from the left ventricle when it contracts
    aorta

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