| amnio- | The amnion. Origin: G. Amnion (05 Mar 2000) |
|---|---|
| amniocardiac vesicle | The rostral portion of the most primitive intraembryonic celom. (05 Mar 2000) |
| amniocele | <medicine> A hernia at the navel. Origin: Gr. The navel + a tumour: cf.F. Omphalocele. Source: Websters Dictionary (01 Mar 1998) |
| amniocentesis | <procedure, obstetrics> Sampling of the fluid in the amniotic sac. In humans this is carried out, between the 12th and 16th week of pregnancy, by inserting a needle through the abdominal wall into the uterus. By karyotyping the cells and determining the proteins present, it is possible to determine the sex of the foetus and whether it is suffering from certain congenital diseases such as Down's syndrome or spina bifida. (05 Feb 1998) |
| amniochorial | Relating to both amnion and chorion. (05 Mar 2000) |
| amniochorionic | Relating to both amnion and chorion. (05 Mar 2000) |
| amniocyte | <pathology> A cell found floating freely in the amnion sac (a membranous sac containing the amniotic fluid) surrounding an embryo. (05 Feb 1998) |
| amnioembryonic junction | The line of amniotic attachment to the periphery of the embryonic disk. (05 Mar 2000) |
| amniogenesis | Formation of the amnion. Origin: amnio-+ G. Genesis, production (05 Mar 2000) |
| amniogenic cells | Cell's from which the amnion develops. (05 Mar 2000) |
| amniography | Radiography of the amniotic sac after the injection of radiopaque, water-soluble solution into the sac, which outlines the umbilical cord, the placenta, and the soft tissues of the foetal body; an obsolete technique. See: fetography. Origin: amnio-+ G. Grapho, to write (05 Mar 2000) |
| amnioma | <tumour> Broad flat tumour of the skin resulting from antenatal adhesion of the amnion. Origin: amnio-+ G. -oma, tumour (05 Mar 2000) |
| amnion | <anatomy, obstetrics> A thin but tough extraembryonic membrane of reptiles, birds and mammals that lines the chorion and contains the foetus and the amniotic fluid around it, in mammals it is derived from trophoblast by folding or splitting. (05 Feb 1998) |
| amnion nodosum | Nodules in the amnion that consist of typical stratified squamous epithelium. Synonym: squamous metaplasia of amnion. (05 Mar 2000) |
| amnion ring | The ring formed by the attachment of the amnion to the umbilical cord at its point of emergence from the umbilicus. (05 Mar 2000) |