Electrical Conduction System Quiz

What role does the sinoatrial (SA) node play in the heart's electrical conduction system?

How does the atrioventricular (AV) node contribute to the efficiency of heart contractions?

Discuss the significance of the bundle of His and Purkinje fibers in the conduction system.

In what ways did Willem Einthoven's invention of the electrocardiograph enhance our understanding of cardiac function?

Tags

NGSS.HS-LS1-3

Explain the relationship between the electrical activity of the heart and the observable ECG waveforms.

Tags

NGSS.HS-PS2-5

What implications does the inability to see atrial repolarization on an ECG have for interpreting heart function?

The place where the electrical current starts and is considered the heart's pacemaker:

• Sino-atrial node 
• right atrium
• atria-ventricular node 
• left ventricle

The heart’s natural pacemaker is termed the:

• sinoatrial node (SA)

• atrioventricular node (AN)

• Purkinje fibers (PF)

What is the primary function of the sinoatrial node in the heart?

• To receive oxygen

• To pump blood

• To filter blood

• To act as a pacemaker

The electrical impulse that controls the heartbeat is first generated in which part of the heart?

• Ventricles

• Atrioventricular node

• Sinoatrial node

• Left atrium