EKG Flashcards
On an EKG, what is represented by the P wave?
a small upward deflection at the very beginning of the EKG cycle of one heartbeat that represents the electrical activity needed to depolarize all of the contractile cells of the atria
On an EKG, what is represented by the P-Q interval?
time to conduct APs through all the Nodal cells of the heart
On an EKG, what is represented by the QRS complex?
small downward deflection, huge upward, and huge downward deflection representing the combined electrical activity needed to depolarize all the contractile cells of the ventricles
On an EKG, what is represented by the S-T segment?
the time when the ventricles are depolarized in the plateau phase
On an EKG, what is represented by the T wave?
a small upward deflection at the end of the EKG cycle of one heartbeat that represents the repolarization and beginning of a period of relaxation in ventricles
On an EKG, what is represented by the flat segment after the T wave?
ventricular diastole (relaxation)
