Yes, but weakly (i.e. low pressure).
Pushed into the two ventricles from the two atria, and then pushed into pulmonary and aortic trunks
The atria Actually, it is the contractions (squeezing) of the ventricles (the lower parts of the heart), not the atria (the upper parts), that do the pumping. That's why the lower part of the heart is larger, and the muscular walls are thicker. The atria receive the blood from the body and pump it down into the ventricles.
the atria pump blood only to the ventricles.
the atria only pump blood to the ventricles
Veins carry blood to the atria. In contrast, arteries carry blood away from the ventricles.
70% the remaining 30% is pushed into the ventricles during atrial systole
Atria receive blood from the veins.
The atria allow the blood to move from the body into the heart.
to force blood to the ventricles
In cardiovascular health, heart valves are located between atria and ventricles in the heart. The valves will open significantly during the atrial depolarization, or contraction of the atria. During the subsequent re-polarization of the atria and depolarization of ventricles, the valves are pushed in the opposite direction and shut closed. This mechanism allows the flow of blood in one single direction only, from atria to ventricle.
The atria are chambers that receive blood that returns to the heart.
The atria are chambers that receive blood that returns to the heart.