Want to see how your heart works?  Check out TheVisualMD.com ("Your virtual wellness information center") for some cool 3-D visualizations that integrate state-of-the-art medical imaging with computer-generated animation.  Cardiovascullar health is the therapeutic area that has the most videos available, but the site is expanding its offerings into other areas, including urology and neurology. This video will give you a better understanding of what an arrhythmia looks like (I mentioned arrhythmias in yesterday's post).  If you really do want to see at least a little bit of a bloody mess (it's not that bad, but then again, I am not squeamish about such things), you can watch this real kidney transplant.  Cool, eh?