Word: sperm
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Genius in the Sperm Whale? Has the Sperm Whale ever written a book, spoken a speech? No, his great genius is declared in doing nothing...
...fallopian tubes. In England last week there was a flurry of optimism about a successful treatment for some of these would-be mothers. A respected, pioneering obstetrician-gynecologist reported that in three cases a ripe egg cell had been removed from a wife and fertilized in a laboratory by sperm from her husband; then the resulting conceptus had been implanted in the wife's womb and she had given birth to a normal child. The three babies thus conceived are now from twelve to 18 months old. But optimism faded fast with the news that the doctor had failed...
...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 for the remainder of the nine months' gestation...
Common causes of infertility are blockage or surgical removal of the oviducts so that the egg cannot meet the sperm. Bevis and several other investigators on both sides of the Atlantic reasoned that this roadblock might be bypassed if: 1) ripe ova were removed through a small surgical incision in the abdomen, 2) one was fertilized by the husband's sperm (obtained by masturbation), 3) the conceptus was kept alive and subdividing in glassware for a few days, and finally 4) it was implanted in the wife's uterus. Bevis succeeded in keeping the conceptus alive in what...
...microscopic views of the internal organs and processes, and can serve as a long lens for a camera. It has proved invaluable for determining some of the reasons for female infertility. Introduced through the vagina of a patient under a local anesthetic (see diagram), the culdoscope gives doctors a sperm's-eye view of the female reproductive system, and has enabled them to discover several previously unknown defects that can prevent conception and pregnancy...