heart internal structures

Right Internal View

Left Internal View

Note the difference in the thickness of the walls of the right and left ventricles. Back

1 = Tricuspid Valve 2 = Chordae tendinae 1 = Bicuspid Valve 2 = Chordae tendinae

3 = Moderator Band 4 = Inferior Vena Cava 3 = Papillary Muscle 4 = Trabeculae Carneae

5 = Coronary Sinus (Pulmonary Semilunar Valve) Black Arrow - to Aorta Red Arrow - to Pulmonary V.

1 = Tricuspid Valve	2 = Chordae tendinae	1 = Bicuspid Valve	2 = Chordae tendinae
3 = Moderator Band	4 = Inferior Vena Cava	3 = Papillary Muscle	4 = Trabeculae Carneae
5 = Coronary Sinus	(Pulmonary Semilunar Valve)	Black Arrow - to Aorta	Red Arrow - to Pulmonary V.