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leen
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04/25/06 - 01:49 PM             #1

56-year-old man with extensive coronary artery atherosclerotic disease has evidence of coronary vasoconstriction and myocardial ischemia. The most likely cause of the vasoconstriction is failure of the endothelial cell layer of the diseased coronary arteries to produce a substance with which of the following actions?
a. activation of Na+ channels
b. closure of K+ channels
c. opening L-type Ca++ channels
d. stimulation of ATP accumulation
e. stimulation of cGMP accumulation



robin082006
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04/25/06 - 02:58 PM             #2

E, nitric oxide

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drpkaur
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04/25/06 - 05:16 PM             #3

E,.NITRIC OXIDE

drpkaur
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04/25/06 - 05:29 PM             #4

hi guys,
i have some difficulty in understanding those concepts given in kaplan lecture notes physiology especially in heart muscle mechanics,like preload,independence of preload and contractility,cardiac function curves.....plz somebody can explain all this to me in short.....
one thing more plz check that in kaplan notes it's written that ventric repolarization proceeds from epicardium to endocardium ,well in textbook it's reverse given,which one is right..

drpkaur
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04/25/06 - 05:29 PM             #5

hi guys,
i have some difficulty in understanding those concepts given in kaplan lecture notes physiology especially in heart muscle mechanics,like preload,independence of preload and contractility,cardiac function curves.....plz somebody can explain all this to me in short.....
one thing more plz check that in kaplan notes it's written that ventric repolarization proceeds from epicardium to endocardium ,well in textbook it's reverse given,which one is right..

doc179
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04/25/06 - 06:44 PM             #6

E

tolito
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04/25/06 - 08:55 PM             #7

E.

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r_albayunen
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04/25/06 - 10:50 PM             #8

e

gpsbrar
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04/26/06 - 04:00 AM             #9

E.

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yasmeen
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04/26/06 - 05:19 AM             #10

node mech of nitric oxide


leen
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04/26/06 - 01:18 PM             #11

thanks guys its E







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