Because of the constant inflow of blood,the atria are thick-walled and located inferiorly in the heart.

Name: Because of the constant inflow of blood,the atria are thick-walled and located inferiorly in the heart.
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The atria are thin-walled and located superiorly in the heart. They receive blood returning to the heart and then pump it into the ventricles. The ventricles have thicker walls because they pump blood out of the heart and into the circulatory system.

Because of the Constant Inflow of Blood,the Atria Are Thick-Walled