DrVirgo
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How do Amphetamine and Ephedrine work?
A. displace norepi from the mobile pool
B. decrease breakdown of Norepi
C. increase receptors for Norepi
D. inhibit MAO
E. inhibit COMT
Also:
What are the effects of amphetamine and ephedrine on the heart and lungs?
-Increased heart rate, via norepi on beta 1 receptors and
-bronchodilation? (do they stimulate B2 receptors somehow?)
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| mjl1717
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ill go with answer-a
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| nadiabarati
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the principal mechanism is to displace noradrenaline from storage vesicles in presynaptic neurons. The displaced noradrenaline is released into the neuronal synapse where it is free to activate the postsynaptic adrenergic receptors
answer is A
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| HILFIGER
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A
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| drpkaur
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I'll also go with A...
Amphetamines do increase HR but due to excess of it causes cardiac arrythmias ,possible MI and strokes
But about bronchodilation i am not sure ,i think NE doesnot act on beta 2 receptors so how come bronchodilation...??????
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| DrVirgo
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The answer is A.
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| DrVirgo
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And it seems like this has been discussed before:
http://www.prep4usmle.com/forum/comments.php?id=3...
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