Question

Is composted of five wave forms that indicate the heart’s electrical activity P,Q,R,S,T

Answer 1

The right answer is Electrocardiography (or Electrocardiogram).

In a typical plot, one can notice five characteristic waves. They are called P, Q, R, S and T. The illustration below shows what a normal electrocardiogram looks like:

* the P wave marks the depolarization during the contraction of the atria;

* the PR interval indicates the time required to transmit the electrical impulse of the sinus node of the atria to the ventricular muscles;

* the QRS complex marks depolarization and ventricular contraction;

* the QT interval corresponds to the global ventricular repolarization;

* T wave refers to the end of ventricular repolarization.