精索 spermatic cord

互联网2013-11-14

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哺乳类的输精管。动、静脉（睾丸动脉-蔓状静脉网）以及神经包在同一被膜中所形成的索状结构。精索的被膜由数层组成，各层延续至阴囊并分别包围睾丸，并参与阴囊壁的形成。

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