Wheelerste all lifeure of thepart.um.pulsesSpinal Cord12 The spinal cord is the continuation of the medullaoblongata. On the basis of the indicators, analyseillustration 1.8 and the description and prepare notesThe spinal cord of a new bornbaby extends upto the tip ofinyour Science diary.the vertebral column. BatinThe spinal cord is protected inside the vertebraladults, it is seen only upto themiddlethe vertebralcolumn. Like the brain, the spinal cord is also column. This is because thecovered by meninges. The central canal seen in the spinal cord does not grow incentre of the spinal cord is also filled with proportion to the growth ofcerebrospinal fluid. In the spinal cord, white matterthe vertebral columnis seen outside and grey matter is seen inside.Central canalDorsal rootofrioustheum.Greymatter.MWhite matterVentral rootvtIllustration 1.8 Cross section of the spinal cordThere are 31 pairs of spinal nerves arising from the spinal cord. A dorsal root anda ventral root join to form a spinal nerve. Sensory impulses reach the spinal cordthrough the dorsal root. Motor impulses go out of the spinal cord through theventral root. Impulses from different parts of the body are transmitted to andfrom the brain through the spinal cord. It also coordinates the repeated movementsduring walking, running etc.IndicatorsProtection of the spinal cord.Formation of the spinal nerves.DMQY6TFunctions of the spinal cord.​