What Is the Primary Function of the Pericardial Sac

question 22

Multiple Choice

What is the primary function of the pericardial sac

• A)to prevent excessive expansion of the heart as it fills with blood
• B)to secrete a fluid that reduces friction while the heart beats
• C)to serve as a reservoir for blood to be used during strenuous exercise
• D)to provide oxygen and nutrients to the heart muscle

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