ECG!

What is the electrical event equivalent of diastole?

• Depolarization

• Repolarization

What structure is the pacemaker of the heart?

• Purkinje fibers

• SA Node

• AV Node

• Aorta

Abnormally slow heart rate is called _

• Tachycardia

• Bradycardia

Normal resting heart rate is between _ beats per minute

• 80-120

• 30-50

• 60-100

• 150-200

On an ECG, the P wave corresponds with _

• Atrial repolarization

• Ventricular depolarization

• Ventricular repolarization

• Atrial depolarization

On an ECG, the QRS complex corresponds with _

• Atrial systole

• Ventricular systole

• Ventricular diastole

• Atrial diastole

What is atrial fibrilation?

• Uncoordinated contraction of the atria

• Uncoordinated relaxation of the atria

• Uncoordinated depolarization of the Purkinje fiber

• Excessive cardiac output causing skewed electrical signals

What does a missing P wave indicate on ECG?

• A problem with ventricular depolarization

• A problem with atrial depolarization