| 单词 | Cervical os |
| 释义 |
Cervical os
原声例句
Osmosis-生殖 In this condition, the placenta implants in the lower uterus, close to or even covering the uterine opening, called the internal cervical os, and it can therefore easily bleed, which usually happens after 20 weeks of gestation. 这种情况下，胎盘附着在子宫下部，接近甚至覆盖子宫开口（宫颈内口），导致这个部位在孕期20周后经常会有血液流出。
英语百科
External orifice of the uterus（重定向自Cervical os）
   The external orifice of the uterus (or ostium of uterus, or external os) is a small, depressed, somewhat circular aperture on the rounded extremity of the vaginal portion of the cervix. Through this aperture, the cervical cavity communicates with that of the vagina. |
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