Which of these statements describes why the heart valves open and close A)There is prolonged calcium influx. B)There is turbulent flow in the atria and ventricles. C)Na⁺ and K⁺ fluxes occur during ventricular depolarization. D)There is a pressure difference on the two sides of the valve.

Question

Quizplus · Accepted Answer

The heart valves open and close in response to pressure differences on the two sides of the valve. Valves open when the pressure on one side is greater than the pressure on the other side, allowing blood to flow through. Valves close when the pressure on the other side becomes greater, preventing backflow of blood.

Which of These Statements Describes Why the Heart Valves Open