extraembryonic


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Related to extraembryonic: extraembryonic membranes

extraembryonic

 [ek″strah-em″bre-on´ik]
external to the embryo proper, as the extraembryonic coelom or the extraembryonic membranes.

ex·tra·em·bry·on·ic

(eks'tră-em'brē-on'ik),
Outside the embryonic body; for example, the extraembryonic membranes involved with the embryo's protection and nutrition that are discarded at birth.

extraembryonic

/ex·tra·em·bry·on·ic/ (eks″trah-em″bre-on´ik) external to the embryo proper, as the extraembryonic coelom or extraembryonic membranes.

extraembryonic

(ĕk′strə-ĕm′brē-ŏn′ĭk)
adj.
Of or being a structure that is outside the embryo: extraembryonic membranes.

ex·tra·em·bry·on·ic

(eks'tră-em'brē-on'ik)
Outside the body of the embryo; referring, e.g., to membranes providing protection and nutrition but discarded at birth without being incorporated in the body.

extraembryonic

lying outside the embryo, e.g. EMBRYONIC MEMBRANE.

extraembryonic

external to the embryo proper, as the extraembryonic celom or the extraembryonic membranes.

extraembryonic membranes
the fetal membranes, chorion, amnion, allantois, yolk sac; term used mostly in the early embryonic period.
References in periodicals archive ?
The iPS cloned mice were created by inserting iPS cells made from a donor mouse into a genetically abnormal blastocyst which could produce extraembryonic tissues but not an embryo.
To avoid the damaging effects of UVR, aquatic broadcast spawning species use a variety of defensive mechanisms including extraembryonic shielding cells, spawning behavior, DNA repair mechanisms, and UV absorbing molecules (Epel et al.
The chorioallantoic membrane develops from two extraembryonic structures: the chorion and allantois.
Erk5 null mice display multiple extraembryonic vascular and embryonic cardiovascular defects.
Dynamic study of the extraembryonic vascular network of the chick embryo by fractal analysis.
As such, the presence of extraembryonic membranes is necessary, not in the sense that it follows directly from the laws of chemistry; rather, they are necessary if the embryo is going to survive.
In the normal course of events, the bowel of the developing embryo herniates into the extraembryonic coelomic cavity, where it makes a 90[degrees] cephalocaudal rotation before returning into the intra-abdominal cavity and completing a 270[degrees] counterclockwise rotation.
Embryonic and Extraembryonic Stem Cell Lines Derived from Single Mouse Blastomeres," Nature 439 (2006): 216-19.
The mother of all stem cells is the zygote, a fertilized egg cell that can give rise to every part of the human body and, therefore, is considered totipotent--capable of forming both embryonic and extraembryonic tissue (placenta and yolk sac).
The jelly resists twisting and compression, thus serving to protect the critical vascular lifeline, the formation of the umbilical cord begins when the connecting stalk of the extraembryonic mesoderm links the embryo to the trophoblast.
The extraembryonic membranes were removed and the pharynx was isolated by removal of tissue caudal to the heart and cranial to the mandibular arches, followed by excision of the heart and neural tube.