WordNet
uterine cavity
n. the space inside the uterus between the cervical canal and the Fallopian tubes
Wikipedia
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.
Usage examples of "uterine cavity".
Her fallopian tubes and ovaries were unremarkable and her uterine cavity was empty.
I fished up through the isthmus of the uterine cavity, into the fallopian tube, and extracted three tiny eggs.