| choriocarcinoma | <oncology> Malignant tumour of trophoblast. (18 Nov 1997) |
|---|---|
| choriocele | A hernia of the choroid coat of the eye through a defect in the sclera. Origin: chorio-+ G. Kele, hernia (05 Mar 2000) |
| chorioepithelioma | <oncology> Malignant tumour of trophoblast. (18 Nov 1997) |
| choriogonadotropin | A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone required for the integrity of conceptus; it appears to play no significant role in the last two trimesters of pregnancy, as the oestrogen and progesterone are then formed by the placenta. Synonym: anterior pituitary-like hormone, choriogonadotropin, chorionic gonadotropic hormone, chorionic gonadotrophic hormone, placenta gonadotropin, placentagonadotropin. (05 Mar 2000) |
| chorioid- | Chorioido- For words beginning thus and not found here, see choroid-, choroido-. (05 Mar 2000) |
| chorioma | <tumour> Rarely used term for a benign or malignant tumour of chorionic tissue. (05 Mar 2000) |
| choriomammotropin | human placental lactogen |
| choriomeningitis | <pathology> A form of meningitis which involves the choroid plexus, particularly the third and fourth ventricles. (27 Sep 1997) |
| chorion | 1. Protective membrane around the eggs of insects and fishes. 2. Extraembryonic membrane surrounding the embryo of amniote vertebrates. The outer epithelial layer of the chorion is derived from the tropoblast. (18 Nov 1997) |
| chorion frondosum | The part of the chorion where the villi persist, forming the foetal part of the placenta. Synonym: shaggy chorion. (05 Mar 2000) |
| chorion laeve | The portion of the chorion from which the villi disappear in the later stages of pregnancy. Synonym: smooth chorion. (05 Mar 2000) |
| chorionic | Referring to the chorion or membrane enclosing the foetus. (09 Oct 1997) |
| chorionic ectoderm | <embryology> Extra embryonic layer of epithelium that forms around the mammalian blastocyst and attaches the embryo to the uterus wall. Forms the outer layer of the chorion and together with maternal tissue will form the placenta. (18 Nov 1997) |
| chorionic epithelioma | An obsolete term for choriocarcinoma. (05 Mar 2000) |
| chorionic gonadotrophic hormone | A glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the oestrogen and progesterone required for the integrity of conceptus; it appears to play no significant role in the last two trimesters of pregnancy, as the oestrogen and progesterone are then formed by the placenta. Synonym: anterior pituitary-like hormone, choriogonadotropin, chorionic gonadotropic hormone, chorionic gonadotrophic hormone, placenta gonadotropin, placentagonadotropin. (05 Mar 2000) |