09 Oct 17 Facts About The Human Body That They Definitely Didn’t Teach You In High School

High school biology was a drag. We live on an incredible planet, but unfortunately the most interesting biology lesson most of us got in school was about sex. Otherwise it was all plant cells, and almost a decade later, I’ve never used my knowledge of photosynthesis.

But biology is one of the most interesting subjects in the world, and there’s so many incredible facts out there you never even thought possible. We all would have gotten much higher grades at school if we’d been taught about them instead of the inner make-up of a leaf!

Here’s 17 of the most unbelievable facts about the human body…

1. The human brain generates enough electricity to power a small bulb

Another amazing fact about the human brain is that it contains a staggering 160,000+ kilometers of blood vessels. It’s no wonder that people lose consciousness 8 to 10 seconds after the blood supply to their brain is stopped.

2. Human teeth are as strong as shark teeth

These apex predators might have the ability to eat us humans, but our teeth are biologically just as strong. Although I doubt my teeth would do me much good if I got into trouble with Jaws. Their strength is beaten by sharks’ razor-sharp teeth!

3. Our stomachs are so acidic they could burn a hole in our skin

To put that in context, our stomachs are so acidic that they could easily dissolve a razorblade. Thankfully, they’re not used for that purpose, and instead our stomach acid helps to keep us protected from harmful bacteria that may enter our bodies with our food.

4. Human hair is practically indestructible

Okay, with the exception of its flammability. Amazingly, there’s enough hair on the average human head to hold the weight of two elephants. But that certainly doesn’t explain why it hurt so much when my sister pulled my hair as a kid…

Our hair also contains a lot of biological information about us, even though it is technically speaking dead. It contains all the information about everything that’s ever been inside our bloodstream, so it’s incredibly useful for forensic analysts.

The post 17 Facts About The Human Body That They Definitely Didn’t Teach You In High School appeared first on Viral Thread.