Cardiac Cycle Quiz

What does the P wave represent in the cardiac cycle?

• Atrial repolarization

• Ventricular repolarization

• Atrial depolarization

• Ventricular depolarization

Which of the following is the normal timing for the QRS complex?

• 0.20 - 0.30 seconds

• 0.12 - 0.20 seconds

• 0.04 - 0.12 seconds

• 0.30 - 0.40 seconds

What is the J point in the cardiac cycle?

• The peak of the T wave

• The end of the P wave

• The end of ventricular depolarization and start of ventricular repolarization

• The start of atrial depolarization

Which wave should follow each QRS complex?

• R wave

• T wave

• U wave

• P wave

What does the U wave represent?

• Ventricular depolarization

• Ventricular repolarization

• Atrial depolarization

• Bundle of His & Purkinje fiber repolarization

What is the normal timing for the PR interval?

• 0.04 - 0.12 seconds

• 0.12 - 0.20 seconds

• 0.20 - 0.30 seconds

• 0.30 - 0.40 seconds

What does the PR segment represent?

• The time between the end of atrial contraction and the beginning of ventricular contraction

• The time between the end of ventricular contraction and the beginning of atrial contraction

• The time between atrial depolarization and repolarization

• The time between ventricular depolarization and repolarization

What is the function of the P-P interval?

• To measure atrial repolarization

• To measure ventricular repolarization

• To analyze atrial rate & rhythm

• To analyze ventricular rate & rhythm

What does the QT interval represent?

• The time between ventricular depolarization and atrial repolarization

• One complete atrial cycle

• One complete ventricular cycle

• The time between atrial and ventricular depolarization

What is the significance of the ST segment?

• It indicates the early phase of ventricular depolarization

• It indicates the early phase of atrial repolarization

• It indicates the early phase of atrial depolarization

• It indicates the early phase of ventricular repolarization