What is the role of the dense connective tissue termed annulus fibrosi cordis in the function of the heart?
a. Provides an anchoring structure for the heart valves, and also electrically isolates the atria from the ventricle.
b. Allows the blood to enter the left atrium from the right atrium before birth.
c. Pulls in the right ventricular wall, aiding its contraction.
d. Separate the right and left ventricles.
ANS: A
It provides an anchoring structure for the heart valves; it also electrically isolates the atria from the ventricle.
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