True about female pelvis

The pelvic cavity, typically defined as a small pa of the space enclosed by the bony pelvis, delimited by the pelvic brim above and the pelvic floor below; alternatively, the pelvic cavity is sometimes also defined as the whole space enclosed by the pelvic skeleton, subdivided into: the greater or false, above the pelvic brim the lesser or true, below the pelvic brim Ref - BDC 6e vol2 pg191