Which of These Statements Describes Why the Heart Valves Open

question 236

Multiple Choice

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.

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