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chorionic |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.06 sec. |
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chorionic pertaining to the chorion. chorionic girdle a circular band of cells of placental origin that invade the endometrium and form the endometrial cups in the mare. chorionic girdle cells see chorionic girdle (above). chorionic gonadotropin a hormone with properties similar to those of luteinizing hormone; it is secreted in large amounts by the placenta during gestation. It stimulates the formation of interstitial cells in the testes of the fetus and causes the secretion of testosterone. It is found in substantial amounts in the urine of pregnant mares (pregnant mares serum gonadotropin—PMSG) and pregnant women (human chorionic gonadotropin—HCG). It is used as an aid in the treatments to induce ovulation and the synchronization of estrus. chorionic somatomammotropin see placental lactogen. chorionic vesicle the early embryonic vesicle before the allantois has developed and encircled the embryo to form the chorioallantoic vesicle and supplant it. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Both amniocentesis and another procedure called chorionic villus sampling, in which doctors pluck bits of the placenta, isolate fetal cells that can reveal many genetic problems in an unborn baby with near certainty. Chorionic villus sampling, to detect genetic abnormalities in the embryo or fetus in the first trimester. A reduction in circulating levels of estrogens and insulin-like growth factor 1 (IGF-1) and/or elevated levels of progesterone, androgens, human chorionic gonadotrophin, IGF-1 binding proteins 1 and 3, cortisol, and insulin have been associated with reduced risk. |
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