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You've Got Some Nerve!
So the bossy
brain sends all these messages around the body. How? By using
nerves. Nerves are bundles of thin threads that carry messages
throughout the body, a lot like how phone lines carry conversations. The name
for this entire system of bundles is the nervous system,
and it runs through the whole body just like those phone lines run through a
city. Some of the messages go straight to the big boss, but a lot of them first
go through a long bundle of nerves called the spinal cord. The
spinal cord is inside your spine (reach around and feel the bumps in your back -
that's your spine).
Your eyes, ears, and skin are even working for your
brain, sending messages through the nervous system about what's going on outside
your body.Want an example of how all these parts work together?
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