Iron Man's Chest

In Ironman movie, the big white growing circle above Ironman's robotic abs is what keeps Tony Stark alive. He has a heart condition that constantly life-threatening. It's a device that keeps his heart beating, pretty much keeping him alive from an injury he received. The unibeam in the center of his chest can emit various types of light energy.

You can see the picture that I posted in my next article, Ironman biodata, the Ironman character, Tony Stark already wearing the electronic chestplate that keeps him alive. I sure think that the movie makers did a nice job on that, plus notice the beginnings of the Iron Man Mark I armor helmet.

Since in Matt Fraction's Iron Man comic series coming out, Tony doesn't have the circle chest light but triangle chest light instead. See the pictures above.