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
Jennifer (given name) Jennifer (given name) Jennifer is a feminine given name, the Cornish form of Guinevere, adopted into the English language during the 20th century. "Jennifer" may mean "the fair one" (from Proto-Celtic *"Windo"-"seibrā"). A Cornish form, it is cognate with the Welsh form Gwenhwyfar and with the Old Irish Findabair. Despite the name's similarity to the Old English words "jenefer", "genefer" and "jinifer", all of which were variants of Juniper used to describe the juniper tree, there is no evidence that it comes from these. A common first name for females in English-speaking countries during the 20th century, the name Jennifer