| placental membrane | The semipermeable layer of foetal tissue separating the maternal from the foetal blood in the placenta; composed of: 1) endothelium of the foetal vessels in the chorionic villi, 2) stromata of the villi, 3) cytotrophoblast (negligible after the fifth month of gestation), and 4) syncytial trophoblast covering the villi; the placental membrane acts as a selective membrane regulating passage of substances from the maternal to the foetal blood. Synonym: placental barrier. (05 Mar 2000) |
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| placental parasitic twin | Underdeveloped twin of allantoidangiopagous twin; joined by umbilical vessels. Synonym: placental parasitic twin. Origin: omphalo-+ G. Sitos, food (05 Mar 2000) |
| placental plasmodium | The syncytial outer layer of the trophoblast; site of synthesis of human chorionic gonadotropin. See: trophoblast. Synonym: placental plasmodium, plasmodial trophoblast, plasmodiotrophoblast, syncytial trophoblast, syntrophoblast. Origin: syncytium + trophoblast (05 Mar 2000) |
| placental polyp | A polyp developed from a piece of retained placenta. (05 Mar 2000) |
| placental presentation | <obstetrics> The anatomic positioning of the placenta over the cervical os (opening to the birth canal). This is an important cause of painless third trimester bleeding in the pregnant female. Many cases of placenta previa will require cesarean section delivery. (31 Dec 1997) |
| placental septa | Incomplete partitions between placental cotyledons; they are covered with trophoblast and contain a core of maternal tissue. (05 Mar 2000) |
| placental sign | <clinical sign> Slight endometrial oozing of blood which occurs in certain animals and sometimes in women at the time of implantation of the fertilised ovum; in women, if the blood appears externally it may be mistaken for a scanty menstrual period. (05 Mar 2000) |
| placental site trophoblastic tumour | A tumour usually arising in the uterus of parous women during reproductive years. Histologically, the tumour consists of a predominance of intermediate trophoblastic cells with fibrinoid material and vascular invasion. (05 Mar 2000) |
| placental souffle | A blowing sound, synchronous with the cardiac systole of the mother, heard on auscultation of the pregnant uterus. Synonym: placental souffle. (05 Mar 2000) |
| placental stage of labour | The part of labour from the birth of the baby until the placenta (afterbirth) and foetal membranes are delivered. Also called the third stage of labour. (12 Dec 1998) |
| placental sulfatase deficiency | <enzyme> An enzyme defect in the placenta which results in failure of conversion of 16a-hydroxydehydroepiandrosterone to estriol; women with this condition rarely enter into spontaneous labour. (05 Mar 2000) |
| placental thrombosis | Thrombosis of the veins of the uterus at the placental site. (05 Mar 2000) |
| placental transfusion | Return to the newborn via the umbilical vessels some of the foetal placental blood. (05 Mar 2000) |
| placentalia | <zoology> A division of Mammalia including those that have a placenta, or all the orders above the marsupials. Source: Websters Dictionary (01 Mar 1998) |
| placentascan | An obsolete method of determining the location of the placenta by means of injected radioactive material and its localization and display by a scintillation detector. (05 Mar 2000) |
| placenta |
A temporary organ joining the mother and unborn child (fetus). The placenta transfers oxygen and nutrients from the mother to the fetus, and permits the release of carbon dioxide and waste products from the fetus.
출처: www.nutrabio.com/Definitions/definitions_p.htm
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| placenta |
the organ that connects the fetus and the mother's uterus and enables the exchange of oxygen and nutrients.
출처: www.aegis.com/pubs/beta/1999/BE991221.html
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| placenta |
Site of attachment of the ovule to the ovary wall. Plasma membrane The outer limiting membrane of a cell.
출처: www.botanyvt.com/pages/dictionary.shtml
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| placenta |
That part of the products of conception apart from the fetus where blood from the fetus and from the mother come into intimate contact to exchange nutrients and waste. Composed of trophoblast. Together with the membranes (of the gestational sac) and the umbilical cord composes the
출처: www.jansen.com.au/Dictionary_PR.html
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| placental |
From the placenta or afterbirth tissue.
출처: www.lsdn.com/glance_glossary.shtml
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| place | possible to recognize |
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| place | Roman Catholic Church: vespers of the office for the dead |
| place | an innocuous or inert medication |
| place | any effect that seems to be a consequence of administering a placebo |
| place | put in position in relation to other things |
| place | situated in a particular spot or position |
| place | a symbol in a logical or mathematical expression that can be replaced by the name of any member of specified set |
| place | a person authorized to act for another |
| place | (British) a disparaging term for an appointee |
| place | contact established between applicants and prospective employees |
| place | the act of putting something in a certain place or location |
| place | the spatial property of the way in which something is placed |