Watch Dr. Berman's anatomy lesson!
Women have three openings: the urethra, the vagina and the anus. Dr. Berman says women often believe that urine comes out of the vagina, but in fact it come out of the urethral opening.
Stimulation of the clitoris is the most common source of female orgasms, Dr. Berman says. "The clitoris is actually 10 to 12 centimeters in length. It branches out internally and reaches almost to the pubic bone in a woman's body," she says. "But this area has more nerve endings than any other part of the body and more nerve endings than a man's entire penis. It's a very important hot spot in a woman's anatomy."