Respuesta :
Answer:
The atria and ventricles are separated by the mitral and bicuspid valves.
Explanation:
The atria undergo atrial systole, a brief contraction of the atria that ejects blood from the atria through the valves and into the ventricles.
I believe the separation of the atriums and ventricles are the tricuspid valve for the right and the mitral valve for the left.