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
Kira (given name) can also be understood as a variant. Therefore, it is also in use as a feminine form of the Greek diminutive form Cyril. In Russian Kira () is the feminine form of the masculine name Kir, meaning "mistress, ruler", but can translate to "leader of the people", "one the people look to" or "beloved". Kira could also have arrived into Russian from the Persian-Greek name Kyra. Kira can also be the diminutive of the old and rare masculine given name Avvakir. Kira is one of several Anglicized forms of the Irish name Ciara, which in Irish means "dark haired". There