Ectopic Pregnancy is the nidation and development of the amphicytula out of the cavitas uteri .
（孕卵在子宫腔以外的部位着床、发育，宫外孕。
Cavitas uteri
英语例句库
英语百科
Uterine cavity
The uterine cavity is the inside of the uterus.
It is triangular in shape, the base being formed by the internal surface of the fundus between the orifices of the uterine tubes, the apex by the internal orifice of the uterus through which the cavity of the body communicates with the canal of the cervix. The uterine cavity of the body of the uterus is a mere slit, flattened antero-posteriorly.