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The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) four directions d) one direction
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The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) four directions d) one direction

User Kausha Mehta
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2 Answers

6 votes

Hi,

The valves in the heart open and close to move blood in between heart chambers.

d) one direction

User Pershawna
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2 votes
C.) four directions
User Bouki
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