Cord lining Cord lining Cord lining, cord tissue, or umbilical cord lining membrane, is the outermost layer of the umbilical cord. As the umbilical cord itself is an extension of the placenta, the umbilical cord lining membrane is an extension of the amniotic membrane covering the placenta. The umbilical cord lining membrane comprises two layers: the amniotic (or epithelial) layer and the sub-amniotic (or mesenchymal) layer. The umbilical cord lining membrane is a rich source of two strains of stem cells: epithelial stem cells (from the amniotic layer) and mesenchymal stem cells (from the sub-amniotic layer). Discovered by Singapore based CellResearch Corp
Umbilical cord the umbilical vein and ductus venosus close up, and degenerate into fibrous remnants known as the round ligament of the liver and the ligamentum venosum respectively. Part of each umbilical artery closes up (degenerating into what are known as the medial umbilical ligaments), while the remaining sections are retained as part of the circulatory system. A number of abnormalities can affect the umbilical cord, which can cause problems that affect both mother and child: The cord can be clamped at different times; however delaying the clamping of the umbilical cord until at least one minute after birth improves outcomes as