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BusySpR MRCOG PART I - PHYSIOLOGY
MRCOG Part 1 , MRCOG I

1400 SBAs. ALL are recalls from last 10 years MRCOG 1 exams. 

 
 
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Forum >> Neuromuscular physiology
Neuromuscular physiology Posted by Farrukh G.
Mon May 23, 2016 02:16 pm

Question

 

 

The plateau in the action potential of cardiac muscle is due to

 

Inhibition of Na+/K+ ATPase

 

Activation of slow voltage gated calcium-sodium channels               

 

Activation of voltage-gated K+ channels

 

Activation of the Na+ / H+ exchanger

 

Inhibition of the Na+ / H+ exchanger

Posted by Farrukh G.
Wed Jun 8, 2016 01:10 am

Correct answer = B

 

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