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4 votes
Why doesn't blood ever flow the "wrong" way?

2 Answers

5 votes
The cells Basically communicate with each other to keep your blood moving the right place. Who assigns this job? Or who is the boss? It is the nucleus.
6 votes
Because it is programmed to go to where it is supposed to go. I believe it is programmed to go to the heart.
User Muzafarow
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