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
Abortion in the Republic of Ireland foetus suffering from anencephaly (the absence of a major portion of the brain, skull, and scalp; blind, deaf, unconscious, and unable to feel pain, a disorder which is universally fatal), was prevented from travelling to Britain by the Health Service Executive. The High Court ruled on 9 May 2007 that she could not lawfully be prevented from travelling even though she was a ward of the state. Amanda Mellet became pregnant in 2011; however, the foetus was suffering from Edwards syndrome, a fatal condition. She was unable to have an abortion in Ireland and had to travel to the UK.