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Placenta   Listen
noun
Placenta  n.  (pl. L. placentae, E. placentas)  
1.
(Anat.) The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth. Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi on its surface penetrate the blood vessels of the parental uterus, and thus establish a nutritive and excretory connection between the blood of the fetus and that of the parent, though the blood itself does not flow from one to the other.
2.
(Bot.) The part of a pistil or fruit to which the ovules or seeds are attached.






Collaborative International Dictionary of English 0.48








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"Placenta" Quotes from Famous Books



... smiled Pao-y. "This prescription of mine is unlike all others. Besides, the very names of those drugs are quaint, and couldn't be enumerated in a moment; suffice it to mention the placenta of the first child; three hundred and sixty ginseng roots, shaped like human beings and studded with leaves; four fat tortoises; full-grown polygonum multiflorum; the core of the Pachyma cocos, found on the roots of a fir tree of a thousand years old; and ...
— Hung Lou Meng, Book II • Cao Xueqin

... dangers of abortion," says Dr. J. Clifton Edgar, in his book, "The Practice of Obstetrics," "are hemorrhage, retention of an adherent placenta, sepsis, tetanus, perforation of the uterus. They also cause sterility, anemia, malignant ...
— Woman and the New Race • Margaret Sanger

... sterilisation cool to 42 deg. C., then add 5 c.c. sterile blood-serum from human placenta (sterilised, if necessary, by the fractional method) to each ...
— The Elements of Bacteriological Technique • John William Henry Eyre

... the top of the uterus. Note further that there are little branching structures passing from the base of this stalk up into the base of the uterus. These branching structures are loops of blood-vessels, and they form part of the placenta, or "afterbirth." Through this cord the embryo receives its nourishment from the mother. The blood of the mother bathes these loops of blood-vessels, and the embryo absorbs from the mother's blood the nourishment which builds its bones, ...
— The Biology, Physiology and Sociology of Reproduction - Also Sexual Hygiene with Special Reference to the Male • Winfield S. Hall

... which are commonly believed to remain in a sympathetic union with the body, after the physical connexion has been severed, are the navel-string and the afterbirth, including the placenta. So intimate, indeed, is the union conceived to be, that the fortunes of the individual for good or evil throughout life are often supposed to be bound up with one or other of these portions of his person, so that ...
— The Golden Bough - A study of magic and religion • Sir James George Frazer

... anastomosis existing from the vena portae. The blood returns from the intestines of the foetus, not through the liver, but into the umbilical vein mentioned, and flows at once into the heart, mingled with the natural blood which is returning from the placenta; whence also it is that in the development of the foetus the liver is one of the organs that is last formed. I have observed all the members, perfectly marked out in the human foetus, even the genital organs, whilst there was ...
— The Harvard Classics Volume 38 - Scientific Papers (Physiology, Medicine, Surgery, Geology) • Various



Words linked to "Placenta" :   placenta previa, womb, vascular structure, uterus, embryonic membrane, placental, caul, afterbirth, ovary, veil, Placuna placenta, reproductive structure



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