Word: uteruses
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...been known for a century that a foreign body in the uterus can prevent conception - at least in animals. But how could such a process work and be put to safe human use? Even though modern medical men have no sure answers, the cautious and respectable Planned Parenthood Federation of America announced last week that its medical advisers are now giving "strong, though preliminary" approval to the newest form of birth control. Information accumulated from more than 10,000 women during 90,000 woman-months of observation, said P.P.F.'s medical committee, "indicates that the modern intrauterine contraceptive devices...
Although no one yet knows just how IUCDS prevent conception, it is certain that-unlike the diaphragm, which covers the cervix-they do not prevent passage of the sperm into the uterus and along the Fallopian tube to meet the egg. Since they definitely trigger excessive contractions of the uterine muscles and of the Fallopian tubes, they may cause displacement of the egg before it has time to be fertilized or to settle in the wall of the womb...
...ovaries, which contain about 300,000 follicles. FSH starts a few of these on a growth process that results in the production of one ovum (egg). Around the 14th day of the cycle, ovulation occurs: the follicle releases the ovum, which travels down the Fallopian tube toward the uterus. If it encounters a live spermatozoon on the way, or soon after its arrival, the ovum will be fertilized...
...takes the first of her progestin pills, and she takes one daily for the next 20 or 21 days. By some biochemical magic not yet understood, the progestin makes it impossible for a follicle to ripen and spill out an ovum. It also prepares the lining of the uterus for menstruation. By the 25th or 26th day, when all chance of ovulation, and therefore of conception, during that cycle has passed, the woman stops taking her pills. Within two or three days, the on set of menstruation signals the start of another cycle...
...except in emergencies, up-to-date obstetrical surgeons usually make a curved cut across the lower part of the pelvis (technically, a laparotrachelotomy, or transverse cervical section) into a thinner part of the uterus. This carries far less risk of damage to the womb itself or to other organs -and, incidentally, leaves the woman free to wear a bikini afterward without embarrassment...