What causes the tricuspid and bicuspid valves to open during the cardiac cycle?
What causes the tricuspid and bicuspid valves to open during the cardiac cycle?
Increased pressure in the atria
Decreased pressure in the ventricles
Increased pressure in the ventricles
Decreased pressure in the atria
Solution
As the ventricular pressure declines, the tricuspid and bicuspid valves are pushed open by the pressure in the atria exerted by the blood, allowing the blood to move freely to the ventricles.