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How Your Body Works! S1 • E7

How Many Heartbeats Do We Get?

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Published on Feb 9, 2015

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Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give you enough cool cardiac science to make your heart skip a beat
Origin of the heart symbol: http://www.slate.com/articles/news_an...
History of silphium trade: http://www.jstor.org/discover/10.2307...

What causes the pain of heartbreak?
http://www.scientificamerican.com/art...

The heartbeat hypothesis:
http://en.wikipedia.org/wiki/Heartbea...

The quarter power scaling principle:
http://www.npr.org/templates/story/st...
http://hep.ucsb.edu/courses/ph6b_99/0...
http://www.sjsu.edu/faculty/watkins/l...




Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

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It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com
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Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigita...

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Andrew Matthews - Editing/Motion Graphics
Katie Graham - Director of Photography
John Knudsen - Gaffer
Dalton Allen - Post-Production Intern

Theme music:
"Ouroboros" by Kevin MacLeod

Other music via APM

Stock images from Shutterstock

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Last week's video:
What is Déjà Vu? https://www.youtube.com/watch?v=ut8mY...

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Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMU...
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The Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-L...
There Was No First Human - https://www.youtube.com/watch?v=xdWLh...
How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p...

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