3 Questions
Which of the following is the primary function of the sinoatrial (SA) node in the cardiovascular system?
Generating electrical impulses to initiate the heartbeat
What is the role of the atrioventricular (AV) node in the cardiac conduction system?
Delaying the electrical impulse to allow the atria to contract before the ventricles
Which vessel carries oxygenated blood from the lungs to the heart's left atrium?
Pulmonary vein
Study Notes
Cardiovascular System Functions
- The primary function of the sinoatrial (SA) node is to act as the heart's natural pacemaker, generating electrical impulses that stimulate the heartbeat.
Cardiac Conduction System
- The atrioventricular (AV) node relays the electrical signal from the SA node, delaying it for a fraction of a second to allow the atria to fully contract before stimulating the ventricles.
Blood Circulation
- The pulmonary veins carry oxygenated blood from the lungs to the heart's left atrium.
Test your knowledge of the cardiovascular system with 30 challenging multiple-choice questions on its physiology. Explore topics such as the primary function of the sinoatrial (SA) node, the vessel that carries oxygenated blood from the lungs to the heart's left atrium, and the role of the atrioventricular (AV) node in the cardiac conduction system. Perfect for students and professionals in the medical field.
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