Cardiac Conduction and ECG

Front

What part of the heart's conduction system is responsible for transmitting impulses to the ventricles?

Back

Purkinje Fibers

Front

Which part of the heart's conduction system is located between the atria and ventricles?

Back

AV Node

Front

What is the term for the circulation of blood to and from the heart muscle itself?

Back

Coronary circulation

Front

What does the P wave on an ECG represent?

Back

Contraction of the atria

Front

What is the name of the electrical impulse that initiates the heartbeat?

Back

Sinoatrial (SA) Node

Front

What does the QRS complex on an ECG indicate?

Back

Contraction of the ventricles

Front

What is the function of the AV bundle in the cardiac conduction system?

Back

To conduct impulses from the AV node to the ventricles.

Front

What does the T wave on an ECG represent?

Back

Relaxation of the ventricles

Front

What is the role of the cardiac conduction system?

Back

To coordinate the heart's rhythm and ensure efficient pumping of blood.

Front

What is the significance of the refractory period in cardiac muscle?

Back

It prevents the heart from undergoing tetany and allows for proper filling of the chambers.