brain II

​the brain may not move, but it needs lots of energy. Energy is sent to the brain by the blood. There are lots of blood vessels

the brain needs energy

The brain is divided into two halves. since the nerves cross when they enter the brain, the left side controls the right side of our body and the right side controls the left side of our body.

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​the nervous system is made up of the brain, the spinal cord, and a network of nerves that communicate allowing us to perform different actions.

the nervous system

​nerves are sort of like wires that carry communication signals or impulses around the body

peripheral nervous system

each nerve is made up of many cells called neurons. they are divided in: cell body, axon and dendrites

the neuron

the brain and the spinal cord make up the central nervous system

​Central nervous system