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阐述输精管的形态结构。

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2021-12-27 20:22
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附睾管在附睾尾端延续为输精管,管壁由内向外分为粘膜层、肌层和浆膜层。输精管的起始端有些弯曲,很快变直,并与血管、淋巴管、神经、睾丸提肌等同包于睾丸系膜内而组成精索。精索经腹股沟进入腹腔,折向后进入盆腔,在生殖褶中沿精囊腺内侧向后延伸,变粗形成输精管壶腹,其末端变细,穿过尿生殖道起始部背侧壁,与精囊腺的排泄管共同开口于精阜后端的射精孔。


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