AP II final - cardio

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Anonymous
ID:
218266
Filename:
AP II final - cardio
Updated:
2013-05-07 09:39:30
Tags:
aa emory
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Description:
caridiac phys
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  1. Baroreceptor will return bp to _______ level
    normal
  2. Myocardial Oxygen Balance:
    how much O2 is extracted?
    what is this # in other tissues?
    which form of work requires the most O2 supply in the heart?
    • 65%
    • 25%
    • Pressure
  3. Increase in myocardial demand must be met by what? how is this diff from other muscles?
    • increase in coronary blood flow
    • others can extract more Hgb (only using 25% at rest)
  4. What is the major cardiovasc control center?
    • Medulla
    • control HR and BP
  5. Secondary center of cardiovasc control?
    • hypothalmic
    • temperature sensing
  6. Cardiovascular control can be affected by ______ _________ from the cerebral cortex
    emotional response
  7. PArasympathetic innervation of the heart is mostly in the _________.  Ach acts on ___ receptors to produce __________ effects.
    • atria
    • M2
    • Negative
  8. __________ fibers are widely distributed throughout the heart.  They originate from T1- ____.  Norepi acts on __1 recpetors, causing positive effects.
    • Symp
    • T4
    • B
  9. B2 recpetors are found mostly in ____ and are _____ in #.  still slightly increases HR and BP.
    • Atria
    • fewer
  10. where are baroreceptors found? stretch causes what?
    • aortic arch
    • carotid arteries
    • decrease in hr, blood vessels dilate
  11. CPP= ________- ____________
    arterial diastolic pressure - LVEDP
  12. what is a normal CO?
    5-7 L/min
  13. CI=CO/BSA.  what is a normal CI?
    2.5-4.2 l/min/m2

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