What Causes the AV (Atrioventricular) Valves Within the Heart to Open

question 43

Multiple Choice

What causes the AV (atrioventricular) valves within the heart to open during the cardiac cycle?

• A)pressure generated by ventricular muscle contraction
• B)an action potential
• C)fluid pressure from the atria filling with blood
• D)a pacemaker signal
• E)arterial blood pressure

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