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Which part of the human body is more complex your heart of the circulatory system
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Which part of the human body is more complex your heart of the circulatory system

User Dmitry Zaets
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Answer: The heart is main organ in the circulatory system. It’s main function is to pump blood throughout your entire body. Your heart can beat up to 60 to 100 beats per minute! But when necessary the speed will increase.

I hope this helps! ^^
User LightSith
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