trabecula septomarginalis

sep·to·mar·gi·nal tra·bec·u·la

[TA] one of the trabeculae carneae in the right ventricle of the heart; it carries part of the right branch of the AV bundle from the septum to the anterior papillary muscle on the opposite wall of the ventricle. Synonym(s): trabecula septomarginalis [TA], moderator band, Reil band (1)