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suter [353]
3 years ago
15

The valves of the heart and veins are similar in that they both _____. prevent the backflow of blood act as propellers to move b

lood forward prevent blood from flowing too quickly are made of rigid cartilage
Health
2 answers:
Oksanka [162]3 years ago
7 0

The other answer was incorrect for my lesson's homework. Anyway, it's either backflow of blood or rigid cartilage.

boyakko [2]3 years ago
4 0

act as propellers to move blood forward

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