Monday, September 10, 2012

Blood brain barrier

I was reading on the blood brain barrier and was amazed that it is like a shield to viruses. It is awesome how are body has different types of defense mechanisms. The blood brain barrier helps protect our brain kind of like a scanner in that it shields against the bad things like viruses yet it allows good things such as vitamins and medications. Even though it acts as a shield there are certain bad things that get through such as Alzheimer's and drugs (heroin). When Alzheimer's attacks the brain it kills the vessels thus allowing hazardous things to enter into it.

Even though there might be a couple of things that may pass the blood brain barrier, it is a good thing that we have it to help us fight something so small that could be life threatening. It's amazing what are body can do!
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1 comment:

  1. UnknownSeptember 11, 2012 at 10:02 PM

    It is interesting how our body works and that one small detail can affect us by helping us fight diseases and let us stay alive or just kill us when viruses attack us. I like how you compared the blood brain barrier to a scanner i never would have thought of it that way, it makes sense though.

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