Vertebral column and sacral curvatures) form during fetal development. The secondary curves develop after birth. The cervical curvature forms as a result of lifting the head and the lumbar curvature forms as a result of walking. The vertebral column surrounds the spinal cord which travels within the spinal canal, formed from a central hole within each vertebra. The spinal cord is part of the central nervous system that supplies nerves and receives information from the peripheral nervous system within the body. The spinal cord consists of grey and white matter and a central cavity, the central canal. Adjacent to each vertebra emerge
Henry (given name) Henry (given name) Henry is an English male given name and Irish surname derived from Old French "Henri"/"Henry", itself derived from the Old Frankish name "Heimeric/Ermerijc", from Common Germanic "*Hainariks" (from "haim-" "home" and "rik" "ruler"), In Old High German, the name was conflated with the name "Haginrich" (from "hagin" "enclosure" and "rich" "ruler") to form Heinrich. The Old High German name is recorded from the 8th century, in the variants "Haimirich, Haimerich, Heimerich, Hemirih". Harry, its English short form, was considered the "spoken form" of Henry in medieval England. Most English kings named "Henry" were called "Harry". The name