Mackenzie has been studying the nervous system these last few weeks and we've been wrapping it up by focusing on the brain. The topic of the brain has been fascinating. The brain is truly a testimony to the perfection and intricacy of God's amazing design of our bodies.
Some interesting facts that we learned:
**The brains neurons cannot repair themselves. Uh-oh!!!!
**While recent evidence shows that people can add a few neurons to their brains over their lifetime, the neurons that you have at birth will be the large majority of what you have to sustain you your entire life.
**The skull, while an important part of God's plan for protection for this fragile organ, is rough on the inside. Rough enough to cut the brain. (Who knew? Well probably Derek Shepard. lol)
Wow! This organ is vital to our daily lives, clearly it's important to take care of it. It just re-enforces our stance on the importance of wearing helmets when participating in activities involving wheels or flying down a mountain.
Thankfully, our skull is only our first line of defense for our almighty brains. God, in His infinite wisdom, also carefully packaged our wonderful brains in cerebrospinal fluid. Or as I refer to it, brain fluid. This amazing fluid, between the brain and skull, cushions and cradles the brain and keeps it in place. It also helps to distribute the force of an impact on our brains when we take a blow to our heads.
Have you ever hit your head so hard that you can feel your brain sloshing around in there? Not fun but thank goodness for that fluid, now that I know about the rough inside of my skull.
So today we did an experiment to show just how important that fluid is. We used 2 eggs, a plastic Easter egg slightly bigger than the eggs, and corn syrup.
|This is your brain.|
|This is your brain inside a skull without cerebrospinal fluid.|
|This is your brain experiencing an impact of the unpleasant variety.|
And the inside of this skull was smooth.
|This is your brain inside of a skull with cerebrospinal fluid.|
(If there are holes in your egg, tape them up. You don't want your brain to leak.)