____ are structures that allow for one-way blood flow through the heart.
Valves are 4 anatomical structures that exist between the different cardiac chambers and that order the direction of the blood flow so that it does not go back once it enters the heart.
The heart valves are located in pairs between the ventricles and atria, to ensure that the blood is directed in only one direction, that is, it does not allow this fluid to return through the chambers where it has already fulfilled its function.
Therefore, we can conclude that the four valves of the heart allow blood flow to reach the heart and prevent it from flowing in the wrong direction.
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