What Is True About Heart Valves

question 12

Multiple Choice

What is true about heart valves?

• A)They enforce a one- way blood flow through the heart.
• B)They operate passively (no active contraction required).
• C)They enforce a one- way blood flow through the heart, operate passively (no active contraction required), and separate atria from ventricles, and ventricles from the large arteries that leave them.
• D)They separate atria from ventricles, and ventricles from the large arteries that leave them.

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