精子是如何从睾丸排到体外的

• 出 处: 科学大观园
• 发表日期: 2008年05期
• 关键词: 精直小管 睾丸网 支持细胞 输出小管 附睾管 附睾头 附睾尾 睾丸纵隔 附睾体 曲细精管

当精子在曲细精管中成熟后,从睾丸支持细胞上脱落下来进入管腔内,随着支持细胞分泌的睾丸网液进入精直小管。精直小管进入睾丸纵隔后反复分支、吻合,形成有网眼大小不等的网状管,即睾丸网。在睾丸网的后上部发出大约12￣15条输出小管,组成了附睾头。之后输出小管汇合形成一条极度迂回蟠曲的附睾管,组成了附睾体和附睾尾。

As the sperm matures in the seminiferous tubules, they fall off the testicular support cells and enter the lumen, with the seminal fluid secreted by the supporting cells entering the pars plana. Straight tubules into the testicular mediastinal repeated branches, anastomosis, the formation of a mesh size mesh network, that testicle network. In the latter part of the testicular net issued about 12 ~ 15 export tubules, the formation of the epididymis. After the output of small tube convergence to form an extremely roundabout plica of the epididymal tube, composed of the epididymis and epididymal tail.