Adaptations of nervous system?

Our brain functions the way it does largely because of its complex chemistry and intricate networks of neurons, the primary brain cells. The human brain has many billions of neurons, which communicate with one another through long fibers called axons. From these, a single neuron may make many thousands of connections with other neurons by way of branching fibers called dendrites. As a result, the total number of connections in the brain is astronomical! What is more, this dense forest of neurons and dendrites is, not chaotic, but precise.
It is an amazing feat of “wiring. Nerve impulse is not just a simple electrical current. Further, while wires in an auto serve merely as conductors, in the human body the nerves themselves forward the nerve impulse, even as a fuse of gunpowder carries a spark along by feeding it. The nerve impulse retains its strength no matter how far it travels, for it is continually regenerated as it moves along.
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