Cardiovascular System Review

Which structure of the electrical conduction system does the arrow indicate?

• Atrioventricular bundle
• Atrioventricular node
• Purkinje fibers
• Sinoatrial node

If the structure indicated by the arrow is not functioning, which of the following signs or symptoms is likely?

• Decrease in heart rate
• More frequent P waves
• Enhanced R to R interval
• Increase in cardiac output

Tags

NGSS.HS-LS1-3

What is the function of the atrioventricular node?

• Conduct impulses along the atria
• Slow the current from the SA node
• Increase heart rate
• Act as the pacemaker

Which structure does the arrow indicate?

• Atrioventricular branch
• Atrioventricular node
• Purkinje fiber
• Sinoatrial node

Which structure sends the electrical impulse down the interventricular septum?

• Atrioventricular bundle
• Atrioventricular node
• Purkinje fibers
• Sinoatrial node

Which structure sends the electrical impulse down the interventricular septum?

• Atrioventricular bundle
• Atrioventricular node
• Purkinje fibers
• Sinoatrial node

An electrocardiogram is ordered for a patient. What is the purpose of this procedure?

• Assess contractile force of the heart
• Monitor blood pressure
• Measure electrical activity of the heart
• Restore normal rhythm

Which structure in the right atrium helps to pace the heart?

• Atrioventricular bundle
• Atrioventricular node
• Purkinje fibers
• Sinoatrial node

Which sequence correctly places the electrical pathway of the heart in order?

• Atrioventricular bundle → atrioventricular node → purkinje fibers → sinoatrial node
• Atrioventricular node → atrioventricular bundle → sinoatrial node → purkinje fibers
• Purkinje fibers → sinoatrial node → atrioventricular node → atrioventricular bundle
• Sinoatrial node → atrioventricular node → atrioventricular bundle → purkinje fibers

After exiting the structure indicated by the arrow, through which valve will blood flow next on its path through the heart?

• Aortic semilunar
• Bicuspid
• Pulmonary semilunar
• Tricuspid