Right Ventricle

The right ventricle is triangular in form, and extends from the right auricle to near the apex of the heart. Its anterior or upper surface is rounded and convex, and forms the larger part of the front of the heart. Its under surface is flattened, rest upon the Diaphragm, and forms only a small part of the back of the heart. Its posterior wall is formed by the partition between the two ventricles, the septum ventriculorum, so that a transverse section of the cavity presents a semilunar outlined. The surface of the septum is convex and bulges into the cavity presents a semilunar outline. Its upper and inner angle is prolonged into a conical pouch, the infundibulum, or conus arterious, from which the pulmonary artery arises. The walls of the right ventricle are thinner than those of the left, the proportion between them being as 1 to 3. The wall is thickest at the base, and gradually becomes thinner toward the upex. The cavity equals in size that of the left ventricle, and is capable of containing about three fluidounces.

The following part presents them for examination:
.....................Auriculo-ventricular
Openings { Opening of the pulmonary artery


Valves { Tricuspid
................Semilunar

And muscular and tendinous apparatus connected with the tricuspid valve:
Colunae carneae
Chordae tendineae