Word: ovum
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...lining (endometrium). This accomplished, her complex hormonal system sends a messenger chemical to her ovaries, telling them to ripen one of the 50,000 or more potential egg cells with which she was born. Usually, only one ovary responds, and on Day 10 or soon after, a fully formed ovum is released into the Fallopian tube. The ovum takes three or four days to work its way down
...Good morning!" says a raw egg, lolling in a shallow dish, its yolk bearing an advertisement for a no-pressure printing technique, proving that the ovum can become a commercial. Noses nudge knowingly from a page dealing with psephology. Five pages of pebbled and scaly abstract photography resolve themselves into a closeup of human toes to make the point: "The wheel is an extension of the foot." One entire spread is printed in Leonardo-like "mirror writing," and another is set upside down just to show how absurd the whole concept of books can be. Indeed, the authors of this...
...defective gene was only one of tens of thousands in each sex cell (sperm or ovum); it was recessive, meaning that whenever it was paired with a normal gene, its maleficent action was blocked. Even so, it spread so far and wide that it eventually appeared among Ashkenazic families that did not know they were related. Then a husband and wife, each bearing the gene, began to have dysautonomic children. On the average, one-fourth of the offspring of such marriages will have two normal genes (see diagram); two will be healthy but carry one abnormal gene, while the fourth...
...morning-after pill is not literally a contraceptive, since it does not work by preventing ovulation, or the union of sperm and ovum. Instead, it prevents implantation of the fertilized ovum (zygote) in the wall of the uterus, which normally occurs about six to seven days after conception...
...minute or two. ("Postorgasmic sleep" had previously been regarded as a male characteristic.) The measles-like rash fades, the engorged vessels of the pelvis and breasts relax to permit the resumption of normal blood flow, and the vagina subsides into a state that facilitates the movement of sperm to ovum for conception...