Umbilical cord diameter. This diameter decreases rapidly within the placenta. The fully patent umbilical artery has two main layers: an outer layer consisting of circularly arranged smooth muscle cells and an inner layer which shows rather irregularly and loosely arranged cells embedded in abundant ground substance staining metachromatic. The smooth muscle cells of the layer are rather poorly differentiated, contain only a few tiny myofilaments and are thereby unlikely to contribute actively to the process of post-natal closure. The umbilical cord contains Wharton's jelly, a gelatinous substance made largely from mucopolysaccharides which protects the blood vessels inside. It contains one vein, which
Umbilical line left portal vein, passing through the patent ductus venosus to the inferior vena cava and right atrium. Appropriate UVC tip position is in the high inferior vena cava to the low right atrium, typically within 1 cm of the diaphragm. If the UVC tip is proximal to ductus venosus it can lead to administration of intravenous fluids into the portal system, with potential portal vein thrombosis, or, in cases of TPN administration, a TPN abscess. Umbilical line An umbilical line is a catheter that is inserted into one of the two arteries or the vein of the umbilical cord. Generally