"Thus, a sexual response in a typical female would typically follow a pattern similar to this one. In the excitement phase, blood and lymphatic fluids increase swelling inside the vagina. Hormones are secreted which lead to mild uterine contractions that raise the uterus away from the pubic bone. The labia swell and the clitoris becomes hard. The vaginal tissues secrete moisture and the vagina itself lengthens and expands slightly inward. The plateau phase begins as excitement continues. This causes the labia to become fully swollen, the clitoris to recede under the clitoral hood, and the uterus to become fully elevated; the hormone is called Oxytocin. The vagina is fully lengthened into the body, and, just before orgasm, lubrication ceases. During orgasm, the pelvis of the female experiences a series of contractions which occur every 8/10ths of a second and can number anywhere from 1–20 or more in the sequence. The contractions include anal and urinary sphincter contractions, smooth muscle contractions in the inward portion of the vagina, pubococcygeus muscle contractions, uterine contractions which cause the uterus and cervix to dip down into the vagina, and general muscle contractions in the body. Further, an electrical sensation surges from the clitoris, radiating throughout the body and stimulating the pleasure centers of the brain, along with a release of the hormone called Oxytocin. When the orgasm ends, the body eventually returns to its pre-excitement state. In general, females have more capacity to experience more contractions over a longer period of time than do males. Females have been found to have much more capacity for sexual intercourse than males. This means females can have more sexual intercourse, more often, and with more orgasms than can the average male."