题目内容

55.关于心包的描述，哪项是错误的？

A. 由纤维心包和浆膜心包组成
B. 纤维心包是一层厚而坚韧的纤维膜，与出入心的大血管外膜相延续
C. 浆膜心包即心外膜
D. 心包腔为浆膜心包脏、壁二层互相转折围成的
E. 心包窦为心包腔的一部分

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