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子宫长是多少算正常
更新时间: 2020-11-04 00:00:00  

正常子宫大小是纵径5.5-7.5cm,前后径3.0-4.0cm,横径4.5-5.5cm,子宫颈长2.5-3.0cm,三个值相加大于12cm。子宫是产生月经和孕育胎儿的器官,位于骨盆腔中央,在膀胱与直肠之间。子宫大小与年龄及生育有关,未产者约长7.5cm、宽5cm、厚3cm,子宫可分为底、体与颈三个部分。宫腔呈倒置三角形,深约6cm,上方两角为"子宫角",通向输卵管。下端狭窄为"峡部",长约1cm。峡部在妊娠期逐渐扩展,临产时形成子宫下段。宫体与宫颈比例因年龄而异,婴儿期为1:2,青春期为1:1,生育期为2:1。子宫正常稍向前弯曲,前壁俯卧于膀胱上,与阴道几乎成直角,位置可随膀胱直肠充盈程度的不同而改变。子宫壁由外向内为浆膜、肌层及粘膜(即内膜)三层。

关键词: 子宫 多少 正常

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