Spinal cord cord ends around the L1/L2 vertebral level, forming a structure known as the conus medullaris. Although the spinal cord cell bodies end around the L1/L2 vertebral level, the spinal nerves for each segment exit at the level of the corresponding vertebra. For the nerves of the lower spinal cord, this means that they exit the vertebral column much lower (more caudally) than their roots. As these nerves travel from their respective roots to their point of exit from the vertebral column, the nerves of the lower spinal segments form a bundle called the cauda equina. There are two regions where
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