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The heart valves act like doors. TrueFalse
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The heart valves act like doors.


TrueFalse

User Arsim
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its true as you breath your heart and lungs go in and out as if you were swinging a door open and shut letting oxgen in and out hope i could help :)
User Red Taz
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User Lisyarus
asked Sep 14, 2021 38.0k views
6. Since the valves act as the doors of the heart, what might happen if these doors do not close?
Lisyarus asked Sep 14, 2021
by Lisyarus
8.3k points
1 answer
5 votes
38.0k views
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