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DemonKia -> RE: What is going on medically for lack of better word behind anOrgasm? (7/24/2009 5:32:56 PM)
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FR, after read thru
Slightly more technical stuff, from Wiki (much longer article there, you might wanna check it out, OP):
Physiological responses
In men
During orgasm, a human male experiences rapid, rhythmic contractions of the anal sphincter, the prostate, and the muscles of the penis. The sperm are transmitted up the vas deferens from the testicles, into the prostate gland as well as through the seminal vesicles to produce what is known as semen. The prostate produces a secretion that forms one of the components of ejaculate. Contraction of the sphincter and prostate force stored semen to be expelled through the penis's urethral opening. The process takes from three to ten seconds, and produces a warm and highly pleasurable feeling.
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In women
A typical woman's orgasm lasts much longer than that of a man.[38] It is preceded by erection of the clitoris and moistening of the opening of the vagina. Some women exhibit a sex flush, a reddening of the skin over much of the body due to increased blood flow to the skin. As a woman nears orgasm, the clitoral glans moves inward under the clitoral hood, and the labia minora (inner lips) become darker. As orgasm becomes imminent, the outer third of the vagina tightens and narrows, while overall the vagina lengthens and dilates and also becomes congested from engorged soft tissue.[39] Elsewhere in the body breasts swell, increasing in size by up to a cup size, and nipples protrude, reaching their maximum at the start of orgasm. The uterus then experiences a series of between 3 and 15 muscular contractions. A woman experiences full orgasm when her uterus, vagina, anus, and pelvic muscles undergo a series of rhythmic contractions. Most women find these contractions very pleasurable. Recently, researchers from the University Medical Center of Groningen, the Netherlands, showed that it is possible to objectively recognize orgasms just by the specific frequencies of these contractions, occurring initially at 0.8 seconds apart.[40] By the end of orgasm, breast size has returned to normal, but nipples take longer than the rest of the breast. After orgasm, the clitoris re-emerges from under the clitoral hood, and returns to its normal size, typically within ten minutes.
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