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Q: Why are the ventricles bigger than the atriums?
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What differences between the atria and the ventricles?

-the atriums are smaller then the ventricles. -the atriums have thinner muscle tissue. -the atriums only have to pump blod to the ventricles. -the ventricles are larger in size. -the ventricles have larger muscle tissue. -the ventricles have to pump blood to either the lungs or around to the rest of the body. hope this helpedddd ;D xox <3 Bellaaaa


How are atriums and ventricles similar?

only they know


What is between atriums and ventricles?

The atrioventricular valves.


What is a atria and ventricles?

atriums and ventricles are apart of the four parts of your heart ventricles are on the bottom and atrium's are on the top hope this helped =D


Does the cardiac muscle open and close?

some does like the atriums and the ventricles


What are the four valves?

left and right atriums left and right ventricles


What is the meaning of valve of the heart?

It is the door/opening between the ventricles and atriums.


What differences between the atria and the ventricles can you feel with your fingers in fetal pig?

The Ventricles are bigger and rougher than the AtriumsThe Ventricles are bigger and rougher than the Atriums.sizeshapewall thickness


How does the heart perform it functions?

The atriums squeeze to push blood to the ventricles, and the ventricles push the blood to separate parts the body.


Number of chamber in the heart?

4 2 ventricles and 2 atriums.


What organ has two chambers called atriums and two chambers called ventricles?

Heart


What makes the valves between atriums open and close?

There are no valves between the atria. The valves between the atria and ventricles close when the ventricles contract.