Endocardial Cushions


Atrioventricular Canal Cushion

Atrioventricular Canal Cushions

Endocardial Cushion

A fetal heart structure that is the bulging areas in the cardiac septum between the HEART ATRIA and the HEART VENTRICLES. During development, growth and fusion of endocardial cushions at midline forms the two atrioventricular canals, the sites for future TRICUSPID VALVE and BICUSPID VALVE.