Dezzy1069 Dezzy1069

12-03-2024
Medicine

contestada

What events cause the two audible heart sounds?
A) Opening and closing of the heart valves
B) Contraction and relaxation of the atria and ventricles
C) Movement of blood through the pulmonary and systemic circulation
D) Activation of the sinoatrial (SA) node and atrioventricular (AV) node

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