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OPRA Biomedical Sciences QUESTION #3802
Question 1
Which cardiac valves specifically prevent blood from flowing back into the ventricular chambers after systole?
  • Valves in the veins
  • Atrio-ventricular valves
  • Pericardium
  • Aortic and pulmonary valves✔️
Correct Answer Explanation
The aortic and pulmonary semilunar valves prevent backflow of blood from the aorta and pulmonary artery into the left and right ventricles respectively.