know your body Nervous system

The Nervous system consists of nerves that take messages from our senses to the brain.It is the communication and control network of the human body.Nerves are made up of long thin cells,called neurons.Nerves carry information from the skin,eyes,ears and mouth,telling the brain what is going on outside the body.Instructions from the brain are sent , to the muscle cells at the right time and to the right place regarding every movement we make.Our spinal cord is connected directly to our brain.From the spinal cord,nerves radiate out reaching every part of the body.Each nerve has thousand of individual nerve cells which carry electrical signals to and from the spinal cord and brain.The brain looks like a giant ,wrinkled walnut.The brain and spinal cord are surrounded and protected by cerebration fluid .The central nervous system is connected to every part of the body by 43 pairs of nerves.There are nearly 45 miles of nerves running through our body.

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