Physio Block 3

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Author:
pszurnicki
ID:
69402
Filename:
Physio Block 3
Updated:
2011-03-03 21:39:11
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Physio Block
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Physio Block 3
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  1. What drug decreases preload?
    Nitroglycerin
  2. What drug decreases afterload?
    Hydralazine
  3. Cardiac output equals what?
    Stroke volume
  4. The largest blood volume in the CVS is found where?
    • 1.venous side
    • 2.pulmonary circulation
  5. Blood flow is equal to what?
    difference in pressure/ resistance
  6. What is the prime determinant of viscosity?
    hematocrit
  7. What lowers hematocrit?
    anemia
  8. What is polycythemia?
    Increase in RBC #
  9. Resistance in proportional to what?
    viscosity x length of bv/r^4
  10. What are the 2 type of flow in the system?
    • Laminar
    • Turbulent
  11. Which flow, laminar or turbulent produces more resistance?
    Turbulent
  12. Which flow produces murmurs?
    turbulent
  13. Which is a layered flow?
    Laminar
  14. Which is a non layered flow?
    turbulent
  15. Reynolds number measure what?
    turbulent blood flow
  16. Reynolds number is proportional to what?
    diameter x velocity x density/ viscosity
  17. Which artery would have a greater pulse pressure, a compliant one or a stiff one?
    stiff one
  18. What is the most compliant artery in the system?
    the Aorta
  19. Mean arterial pressure is equal to what?
    • 1. diastolic pressure + 1/3 pulse pressure
    • 2. 2/3 diastolic pressure + 1/3 systolic pressure
    • 3.CO x TPR
  20. What function does angiotensin II have?
    vasoconstriction
  21. What is the differential between Wilsons and Menke?
    • Wilson--- high copper
    • Menke--low copper
    • both have low ceruloplasmin
  22. Williams syndrome is caused by?
    decreased elastin
  23. What disease is characterized by elfie facies?
    Williams
  24. The left heart's cardiac output is equal to what?
    Right heart's cardiac output
  25. Beta adrenergic receptors are found where?
    What do they mediate?
    What do they bind?
    • on arterioles
    • vasodilation
    • epinephrine

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