A congenital heart defect characterized by downward or apical displacement of the TRICUSPID VALVE, usually with the septal and posterior leaflets being attached to the wall of the RIGHT VENTRICLE. It is characterized by a huge RIGHT ATRIUM and a small and less effective right ventricle.

The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.

Myosin type II isoforms found in cardiac muscle.