Which of the Following Actions Causes the Atrioventricular (AV) Valves

question 44

Multiple Choice

Which of the following actions causes the atrioventricular (AV) valves to close?

• A) Increased intraventricular pressure
• B) Depolarization at the AV node
• C) Ventricular relaxation and backflow of blood
• D) Contraction of the atria

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