Vertebral column spinal nerves. The spinal nerves provide sympathetic nervous supply to the body, with nerves emerging forming the sympathetic trunk and the splanchnic nerves. The spinal canal follows the different curves of the column; it is large and triangular in those parts of the column which enjoy the greatest freedom of movement, such as the cervical and lumbar regions; and is small and rounded in the thoracic region, where motion is more limited. The spinal cord terminates in the conus medullaris and cauda equina. Spina bifida is a congenital disorder in which there is a defective closure of the vertebral arch.
Douglas (given name) "Douglas" is derived from the Gaelic elements: "dubh", meaning "dark, black"; and "glas", meaning "stream" (also a derivative of "glas", meaning "green"). The surname "Douglas" is a habitational name, which could be derived from any of the many places so-named. While there are numerous places with this name in both Ireland and Scotland, it is thought, in most cases, to refer to Douglas, South Lanarkshire, which was once the stronghold of Clan Douglas. The Scottish Gaelic form of the given name is ; the Irish language form it is , and "Dubhghlas", which are pronounced . The Hawaiian language form