PELVIC CAVITY • FREE-TRANSLATOR.COM • Definition of Pelvic cavity

... side of each kidney is directed outwards, and the concave side is turned inwards towards the spine. From the middle of the concave side, which is termed the hilus, a long tube of small caliber, called the ureter, proceeds to the bladder. The latter organ is an oval bag, situated in the pelvic cavity. It is composed principally of elastic muscular fibers, and is lined internally with mucous membrane, and coated externally with a layer of the peritoneum, the serous membrane which lines the abdominal and pelvic cavities. The ureters enter the bladder through its posterior ...

— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce