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子宮頸究竟長在什么部位，你知道嗎？

出處：網(wǎng)絡(luò)收集 日期：2024-07-02 09:46:32 編輯：秩名

子宮在人體下腹部盆腔中央、膀胱和直腸之間，是由子宮底、子宮體、子宮峽部和子宮頸組成的。
 
子宮頸是子宮的一部分，是指子宮峽部和子宮頸內(nèi)口以下的部分。它呈圓柱形，上面與子宮峽部相接的叫子宮頸內(nèi)口，下端是子宮頸外口。婦科檢查時，能看到的是子宮頸伸入陰道的部分和子宮頸外口。子宮頸外口的形狀因人而異。沒有生過小孩的婦女，子宮頸外口是小而整齊的圓形或卵圓形孔；生過小孩的婦女，由于生產(chǎn)時受到損傷，子宮頸外口變成1條橫行或不規(guī)則形的縫隙。這條縫隙把子宮頸外口分為子宮頸前唇和后唇。
 
子宮頸主要由結(jié)締組織組成，也有少量的平滑肌纖維，血管分布豐富。子宮頸管內(nèi)膜是1層高柱狀上皮，伸入陰道內(nèi)的宮頸表面是復(fù)層鱗狀上皮，兩種上皮有明顯的分界線，往往是宮頸癌的好發(fā)部位。

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