Left Ventricle Chordae Tendineae Spuriae, Sectional Anatomy

Description

Sectional anatomy through the left ventricle (ventriculus sinister) is presented in an anterior-oriented view, with the endocardial surface opened to expose trabeculae carneae and the left ventricular wall musculature. Fine fibrous strands consistent with chordae tendineae spuriae traverse the cavity or course within the trabecular network, distinct from the true chordae tendineae that run from papillary muscles to the free margins of the mitral valve leaflets. Superiorly and posteriorly, the mitral apparatus would lie toward the atrioventricular junction, while these false cords remain embedded within or bridging between muscular ridges of the ventricular wall. Recognition of chordae tendineae spuriae matters because they can be mistaken for pathologic structures during echocardiography, cardiac CT, or MRI. A linear band in the left ventricle raises differentials that include ruptured true chordae, fibroelastoma, mural thrombus with a strand-like tail, or an anomalous ventricular band; distinguishing a non-functional tendinous cord from valve-supporting chordae helps prevent mislabeling mitral regurgitation mechanisms. Surgeons and interventionalists also care about these bands when navigating the left ventricle, since chord-like strands can snag catheters or confuse orientation during mitral valve repair planning. Small structure, common pitfall. Use this artwork for sectional anatomy teaching in cardiovascular blocks, for figure panels in cardiology and cardiac imaging manuscripts discussing normal variants, or for surgical education materials contrasting true mitral chordae with false tendons in the left ventricle. Anatomical accuracy verified by SciePro's Medical Advisory Board.