Repolarization of the papillary muscles or remnants of ...

[EAugust]

Repolarization of the papillary muscles or remnants of ventricular repolarization appears on an electrocardiogram as a:
 
  a. P wave. c. U wave.
  b. T wave. d. J point.

Question 2

On an electrocardiogram, which of the following represents ventricular depolarization and re-polarization?
 
  a. PR interval c. ST segment
  b. QT interval d. QRS complex

[kjohnson]

Answer to Question 1

ANS: C
The U wave follows the T wave and precedes the successive P wave. It is thought to represent remnants of ventricular repolarization or repolarization of the papillary muscles.

Answer to Question 2

ANS: B
The QT interval is measured from the beginning of the QRS complex to the end of the T wave. It represents the time required for ventricular depolarization and repolarization to occur and also approximates the time of ventricular systole.

[EAugust]

Thanks for the timely response, appreciate it

[parshano]

Wow, this really help