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Uncircumcised:
A penis that has an intact foreskin.

Ureters:
The two tubes that lead from the kidneys to the bladder.

Urethra:
A canal that carries urine from the bladder to the urinary opening. In males, the urethra is also the passageway for semen. See Urethritis for info on an infection of the urethra.

Urination:
The act of eliminating urine from the body. (Peeing)

Uterus:
The hollow, pear-shaped, muscular organ in females that is the site of menstruation, implantation, and development the fetus if fertilization occurs. Also called the womb.

Urinary Tract Infection (UTI):
A bacterial infection of the bladder, also called cystitis. See Bladder infections for more.