Our Body's Alarm System

I recently took a pain science course through a physical therapy clinic. I was fascinated by some of the newest research in pain science and am still trying to process much of the information. I know some things about myself, having done some self study over the years. One of the best ways I learn is to teach someone else the concept. So, as a means of grasping this new information, I've decided to begin a (reasonably) regular post here where I'll share some of these really interesting, and very useful, ideas. 

So let's start with our body's alarm system. In science class, we studied it as the nervous system. Personally, I think looking at it like an alarm system is much more effective. I mean, what does an alarm system in your house or your car or your business do? If someone tries to break in, it blares loud enough to jerk your body out of bed in an instant, wakes the neighbors, and sometimes phones the police.  I know I'm dating myself, but as a kid I watched Lost in Space. The robot (maybe an early precursor to C-P30) warned the boy, Will Robinson, whenever danger was near. 

The body's alarm system is much more sophisticated than the most advanced alarm system on the market today. It contains 45 miles of nerves, each one energized by a little bit of electricity.

If you step on a rusty nail, the alarm in your foot goes off. It sends a message to your brain saying:

                              "Danger! Danger!" 

If the alarm didn't go off, you'd be walking around with a nail in your foot and never know it. Infection would set in and bad things would happen in your body. The alarm goes off, it gets your attention, you do something about the problem. 

Once you take the nail out, clean the wound, and get a tetanus shot, the alarm can calm down, get back to normal and be ready for the next emergency. 

Pretty cool, huh? So maybe you already knew all that, but we're laying the ground work what else is coming.