Trabeculae carneae

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Overview

The trabeculae carneae (columnae carneae) are rounded or irregular muscular columns which project from the whole of the inner surface of the ventricle, with the exception of the conus arteriosus.

They are of three kinds:

  • some are attached along their entire length on one side and merely form prominent ridges,
  • others are fixed at their extremities but free in the middle,
  • while a third set (musculi papillares) are continuous by their bases with the wall of the ventricle, while their apices give origin to the chordæ tendineæ which pass to be attached to the segments of the tricuspid valve.

The purpose of the trabeculae carnae is most likely to prevent suction that would occur with a flat surfaced membrane and thus impair the heart's ability to pump efficiently.

Echocardiographical and Angiographical Demonstration of Trabeculae Carnae

Images shown below are taken from a case report titled "Atrioventricular and ventriculoarterial discordance associated with Ebstein-like displacement of mitral valve"



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