In anatomy, the<unk>  is a hollow, muscular, and distensible (or elastic) organ that sits on the pelvic floor in mammals. It is the organ that collects urine excreted by the kidneys prior to disposal by urination. Urine enters the<unk>  via the ureters and exits via the urethra.
In males, the<unk>  is superior to the prostate, and separated from the rectum by the rectovesical excavation.
In females, the<unk>  is separated from the rectum by the rectouterine excavation, and it is separated from the uterus by the vesicouterine excavation.
Urinary bladder
Ureter
Urinary system
Uterus
Lymphatic system
Renal medulla
Vas deferens
Urethral sphincter