The Heart Valves Open and Close Due to

question 206

Multiple Choice

The heart valves open and close due to

• A) attachment to the heart muscle.
• B) a pressure difference on the two sides of the valve.
• C) Na+ and K+ fluxes during ventricular depolarization.
• D) turbulent flow in the atria and ventricles.
• E) none of these answers.

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