chorionic cavity
Look at other dictionaries:
Chorionic villi — Diagram of a transverse section, showing the mode of formation of the amnion in the chick. The amniotic folds have nearly united in the middle line. Ectoderm, blue; mesoderm, red; entoderm and notochord, black. (Vill … Wikipedia
chorionic villus sampling — also chorionic villi sampling n biopsy of the chorion frondosum through the abdominal wall or by way of the vagina and uterine cervix at 10 to 12 weeks of gestation to obtain fetal cells for the prenatal diagnosis of chromosomal abnormalities… … Medical dictionary
chorionic sac — the sac formed by the vertebrate chorion, surrounding the embryo, amniotic cavity, and amniotic sac and contributing to the fetal part of the placenta … Medical dictionary
Body cavity — Picture of Human body cavities dorsal body cavity to the left and ventral body cavity to the right. By the broadest definition, a body cavity is any fluid filled space in a multicellular organism. However, the term usually refers to the space… … Wikipedia
pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… … Universalium
Extra-embryonic coelom — Extraembryonic coelom The extraembryonic coelom (or chorionic cavity) is shown between the two layers of extraembryonic mesoderm (labelled mes. ) in this image of an implanted embryo. Latin coeloma extraembryonicum … Wikipedia
Human embryogenesis — is the process of cell division and cellular differentiation of the human embryo during early prenatal development. It spans from the moment of fertilization to the end of the 8th week of gestational age, whereafter the embryo is called a fetus.… … Wikipedia
extraembryonic coelom — n the space between the chorion and amnion which in early stages is continuous with the coelom of the embryo proper * * * the cavity, lined with mesoderm, that surrounds the embryo from the earliest stages of development. It communicates… … Medical dictionary
placenta — placental, placentary /plas euhn ter ee, pleuh sen teuh ree/, adj. /pleuh sen teuh/, n., pl. placentas, placentae / tee/. 1. Anat., Zool. the organ in most mammals, formed in the lining of the uterus by the union of the uterine mucous membrane… … Universalium
Extraembryonic coelom — Infobox Embryology Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Caption2 = System = CarnegieStage = 6a Days = 12 Precursor = Heuser s membrane GivesRiseTo = MeshName = MeshNumber = DorlandsPre = c 44 DorlandsSuf = 12247640 The… … Wikipedia
