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
Murder of pregnant women Murder of pregnant women Murder of pregnant women is a type of homicide often resulting from domestic violence. Domestic violence—or intimate partner violence (IPV)—is suffered by many, and when analyzing cases in which victims came forward, majority of them are women. Many of these women fear harm not just to themselves but also to their unborn children. Recently, more focus has been placed on pregnancy-associated deaths due to violence. IPV may begin when the victim becomes pregnant. Research has shown that abuse while pregnant is a red flag for pregnancy-associated homicide. The murder of pregnant women represents a relatively recently