The septomarginal trabeculae (moderator band) is important because it:

A) conducts subendocardial branches (Purkinje fibers) from the AV node to the anterior papillary muscle.
B) funnels the blood of the right ventricle into the infundibulum.
C) is the thickest part of the myocardium of the left ventricle.
D) prevents blood during systole from reentering the left atrium.
E) provides the fibrous skeleton to which the heart valves are attached.


Ans: A

Anatomy & Physiology

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