The purpose of the partitions is to create the four different chambers of the Human Heart. These chambers are the Right and Left Atrium and the Right and Left Ventricle. Each heart chamber has a unique configuration and shape that specializes its function. read more
Birds(Aves) have three chambers whereas reptiles like crocodile has incomplete four chambers. So just to be more systematic human heart has four chambers. Furthermore human circulatory system being double circulation (pulmonary and systematic circulation) it is important to have four chambers in the heart. read more