Admittedly, the connection to “anatomy” is tenuous at best, but wow – this is beautiful animation (and a very catchy song)

An animation by Crabapple, Boekbinder, & Batt. Visit http://www.ihaveyourheart.com for more details & download the song here: http://bit.ly/ROwMQ7. Via @boingboing

Also worth checking out in full screen and in HD.