A group of Harvard Medical School students are schooling the Internet on anatomical functions with a hilarious music video parody of the viral hit "The Fox."

Set to the tune of the mega-popular song by Ylvis, the students address a common question to which almost know one knows the answer: What does the spleen do?

SEE ALSO: 'SNL' Hilariously Spoofs 'What Does the Fox Say?'

Sure, lungs help you breathe, kidneys do the filtering and the heart pumps blood throughout the body, but the spleen's functionality isn't as well known as those of its anatomical neighbors. Not only are we treated to some dancing body parts — in line with the choreography of the original "The Fox" — we learn the spleen has big blue veins, that it's kind of shaped like Brazil ... and, most importantly, what it does. Watch the video above to find out.

You'll be ready for your anatomy exam in no time.

Image: YouTube