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liraira [26]
3 years ago
9

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

Health
2 answers:
lakkis [162]3 years ago
7 0
Because it is programmed to go to where it is supposed to go. I believe it is programmed to go to the heart.
Firlakuza [10]3 years ago
7 0
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.
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