Which chamber's anterior wall forms most of the sternocostal surface of the hea?
The hea has three impoant surfaces: an anterior surface, a diaphragmatic surface, and a pulmonary surface. The anterior surface, or sternocostal surface, is mostly made up of the right ventricle. The diaphragmatic surface is mostly the left ventricle, but a little bit of the right ventricle sits on the diaphragm as well. Finally, the pulmonary surface, which is on the left, is mostly made up of the left ventricle.
Left atrium
Left ventricle
Right atrium
Right ventricle