What Function of right atrium during atrial systole?

During atrial systole, the right atrium contracts, pushing blood into the right ventricle through the tricuspid valve. This contraction helps to complete the filling of the ventricle, ensuring it has an adequate volume of blood before the ventricle contracts during ventricular systole. Additionally, atrial systole contributes to maintaining proper pressure and flow dynamics within the heart, optimizing overall cardiac efficiency.