Word: ovum
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Dates: during 1970-1979
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Under normal circumstances, pregnancy occurs when an ovum, or egg cell, released by a woman's ovary during ovulation is fertilized in the fallopian tube by a single sperm that has traveled up from the vagina. After the fertilized egg undergoes a number of cell divisions, the tiny clump of cells enters the uterus, where it burrows into the wall and develops until birth. But the Browns, married nine years, had been unable to conceive a child because of Lesley's faulty fallopian tubes. "Three years ago," Lesley says, "we were told that there was no chance that...
...face of a daughter at her first menstruation. Most other mothers, says Weideger, deliver the slap in psychic form, teaching daughters to feel shame about a natural process (the periodic shedding, brought on by a drop in hormonal production, of the lining of the womb when the ovum has not been fertilized...
...discretion. Unfortunately, says Manhattan Gynecologist Edward Stim, who rarely prescribes the drugs, they are sometimes given on a casual, "Why not give it a try?" basis. Clomid, a synthetic hormone-like drug, seems to work by stimulating the pituitary gland to release hormones that help to ripen the ovum. Pergonal, a hormonal extract from the urine of postmenopausal women, primes the ovaries so that another hormone -human chorionic gonadotropin or HCG-can ensure the release of the ovum. Neither treatment should be used unless doctors have first determined that a woman's inability to have a baby is caused...
Normally a woman of childbearing age ovulates once every lunar month, an average of 14 days before the expected onset of menstruation. Her ovaries then expel one or more egg cells, ripe for fertilization. An individual egg (ovum) is drawn into the fallopian tube (oviduct) to begin a four-day journey toward the uterus. After intercourse, the husband's spermatozoa swim upstream through the uterus into the fallopian tubes, and if one sperm succeeds in penetrating an ovum, conception has occurred. The conceptus, repeatedly doubling the number of its cells, enters the uterus and imbeds itself in the lining...
...possible to discover the presence of a bleeding disorder known as hemophilia. A female carrier of hemophilia will have either a normal X chromosome or a defective one--one that is linked to hemophilia. Male infants conceived from an ovum containing the defective X chromosome will be hemophiliacs. It could be perfectly simple, then, to test carriers of hemophilia, determine whether or not their babies are defective, and then depending on the wishes of the parents to abort...