结构高低级

大体解剖 > 心血管系统 > 心 > 室间隔 > [室间隔]肌部

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描述

The greater portion of the ventricular septum is thick and muscular and constitutes the muscular ventricular septum, but its upper and posterior part, which separates the aortic vestibule from the lower part of the right atrium and upper part of the right ventricle, is thin and fibrous, and is termed the membranous ventricular septum. An abnormal communication may exist between the ventricles at this part owing to defective development of the membranous septum.


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