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Home  >>  JEEMAIN and AIPMT  >>  Biology  >>  Human Physiology
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Regarding ECG - choose the incorrect answer :

image
( a ) The ventricular contraction occurs with Q and marks the end of the ventricular systole.
( b ) The T-wave represents the return of the ventricles from excited to normal state (repolarisation).
( c ) The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.
( d ) The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction.
Can you answer this question?
 
 

1 Answer

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(A) is the right answer.

ECG : The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria. The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction. The contraction starts shortly after Q and marks the beginning of the systole. The T-wave represents the return of the ventricles from excited to normal state (repolarisation). The end of the T-wave marks the end of systole.
answered Mar 26, 2014 by pady_1
 
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