Purkinje fibers, the bundle of His, the AV node, and the SA node comprise its conduction pathway, and it is divided into upper and lower compartments called atria and ventricles.
Part of this organ is provided blood by the circumflex artery, and developmental structures located within it include the crista terminalis and fossa ovalis. The papillary muscles in this organ can tighten the chordae tendineae. Purkinje fibers, the bundle of His, the AV node, and the SA node comprise its conduction pathway, and it is divided into upper and lower compartments called atria and ventricles. For 10 points, name this muscular organ which pumps blood throughout the body.
Part of this organ is provided blood by the circumflex artery, and developmental structures located within it include the crista terminalis and fossa ovalis.
Heart