embryonic membrane


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embryonic membrane

ex′traembryon′ic mem′brane


n.
any of the membranes derived from embryonic tissue that lie outside the embryo, as the allantois, amnion, chorion, and yolk sac.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.embryonic membrane - the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)embryonic membrane - the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
placenta - the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus
References in periodicals archive ?
The chick embryo Chorioallantoic membrane (CAM) is an extra embryonic membrane that serves as a gas exchange surface, and its function is supported by a dense capillary network ([9]).
Therefore, it has no clinical values.2,3 Velamentous umbilical cord entry locates at free embryonic membrane outside the placental edge, and umbilical vein twists through amnion and chorion and then goes deep in the placenta.4 Without the protection of wharton jelly, the rupture and embolization of umbilical vessels are more likely to happen.
She delivered the boy (our patient) 20 days post-term and found that the IUD was attached to the embryonic membrane.