The primary purpose of heart valves is to
prevent blood from flowing backward.
pump blo...
![Health](/tpl/images/cats/health.png)
Health, 01.11.2020 19:30, kenziedil2637
The primary purpose of heart valves is to
prevent blood from flowing backward.
pump blood backward.
exchange carbon dioxide for oxygen.
protect the heart from trauma.
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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