I got my period when I was 11. Though the thought of a 6th grader becoming physically able to get pregnant is the stuff of most parents' nightmares, it's not as uncommon as you might think. The national average age for a girl to get her first period is 12, and girls can start as early as age 8. Why so young?
From the kidneys, urine travels down two thin tubes called ureters to the bladder. The ureters are about 8 to 10 inches long. Muscles in the ureter walls constantly tighten and relax to force urine downward away from the kidneys. If urine is allowed to stand still, or back up, a kidney infection can develop.
Urinary disorders: Types list. The list of types of Urinary disorders mentioned in various sources includes: 1  Urinary conditions. 2  Acute urinary conditions. 3  Acute urinary retention. 4  Anuria. 5  Hematuria. 6  Incontinence. 7  Bedwetting. 8  Bladder Incontinence (Pregnancy).