The Evolution of the Heart (A Love Story)

Published on March 11, 2019
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Captions provided by CCTubes – Captioning the Internet! You can check out Google’s Science Journal app at https://g.co/sciencejournal

In order to understand where hearts came from, we have to go back to the earliest common ancestor of everything that has a heart. It took hundreds of millions of years, and countless different iterations of the same basic structure to lead to the heart that you have today.

Thanks as always to Nobu Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/

Thanks to Ceri Thomas for the Ichthyostega reconstruction. Check out more of Ceri’s paleoart at http://alphynix.tumblr.com and http://nixillustration.com

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378490/
https://link.springer.com/article/10.1007%2Fs00018-007-6524-1
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614224/
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1502-3931.1997.tb00458.x
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097462/
https://www.nature.com/articles/ncomms4560
http://www.nhm.ac.uk/discover/news/2014/april/earliest-heart-blood-discovered.html
http://www.sci-news.com/paleontology/science-fossil-oldest-known-cardiovascular-system-01839.html
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0201702
https://www.ncbi.nlm.nih.gov/pubmed/7915669
https://www.ncbi.nlm.nih.gov/pubmed/10355031
https://genent.cals.ncsu.edu/bug-bytes/circulatory-system/
https://onlinelibrary.wiley.com/doi/full/10.1111/brv.12439
http://www.fossilmuseum.net/Fossil_Sites/whitesea/kimberella/kimberella.htm
http://www.tulane.edu/~bfleury/diversity/labguide/mollannel.html
https://academic.oup.com/mollus/article-abstract/42/1/46/1240276?redirectedFrom=PDF
https://circsystems.weebly.com/mollusca.html
https://www.britannica.com/animal/mollusk/Evolution-and-paleontology
https://onlinelibrary.wiley.com/doi/full/10.1111/joa.12687
https://www.thoughtco.com/evolution-of-the-human-heart-1224781
https://www.sciencedirect.com/science/article/pii/S0167488912002868
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459601/
https://www.ncbi.nlm.nih.gov/pubmed/28905992

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