Cardiac Conduction System Flashcard

Front

What is the function of the atrioventricular node?

Back

To delay the passage of electrical impulses to the ventricles.

Front

What does the T wave on an electrocardiogram (ECG) represent?

Back

Ventricular repolarization.

Front

Where is the sinoatrial node located?

Back

Right atrium near the entrance of the superior vena cava.

Front

What is the purpose of the Bundle of His?

Back

To conduct electrical impulses toward the apex of the heart.

Front

Which component of the cardiac conduction system is known as the natural pacemaker of the heart?

Back

Sinoatrial node.

Front

What is the role of the sinoatrial node in the cardiac conduction system?

Back

It initiates electrical impulses that trigger heartbeats.

Front

What is the significance of the P wave in an ECG?

Back

It represents atrial depolarization.

Front

How do Purkinje fibers contribute to heart function?

Back

They spread electrical impulses throughout the ventricles.

Front

What is the sequence of electrical conduction in the heart?

Back

Sinoatrial node → Atrioventricular node → Bundle of His → Purkinje fibers.

Front

What happens during ventricular depolarization?

Back

The ventricles contract to pump blood out of the heart.