GCSE Biology Revision "The Heart and Circulation"
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 Published On Sep 11, 2017

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In this video, we start by comparing the single circulatory system with the double circulatory system. We then look at the structure of the human heart and the pattern of blood flow through it.

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Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...)
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Image credits:

Heart model By BruceBlaus - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index...

Artificial pacemaker By Steven Fruitsmaak [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/b...)], via Wikimedia Commons

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