Given what we know, we can confirm that if the valves separating the chambers in a person's heart did not close, blood would backflow into the atria.
The valves of a person's heart have a very specific role. They are two distinct valves in the form of the semilunar and mitral valves. Their job is to prevent blood from backflow from the ventricles into the atria during ventricular contraction.
Therefore, we can confirm that if the valves separating the chambers in a person's heart did not close, blood would backflow into the atria, option 3 is correct.
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If the valves separating the chambers in a persons' heart did not close, the volume of blood pumped from the ventricles to the body would be reduced because blood would backflow into the atria. So, option C is correct.
The valves in the heart keep blood moving in the right direction. They prevent the backflow of blood within different regions.
There is a total of four heart valves, which keep the blood flowing in the right direction. They are mitral, tricuspid, aortic, and pulmonary valves.
And these valves if didn't close, blood would backflow into the regions where a specific valve is present.
Therefore, if the valves separating the chambers in a persons' heart did not close, the volume of blood pumped from the ventricles to the body would be reduced because blood would backflow into the atria.
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