moderator band

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.

moderator band

[mod′ərā′tər]
Etymology: L, moderari, to restrain; AS, bindan, to bind
a thick bundle of muscle in the central part of the right ventricle of the heart. Missing in some individuals and varying in size in others, it usually contains part of the atrioventricular conduction bundle. Also called trabecula septomarginalis.

moderator band

see septomarginal trabecula.
References in periodicals archive ?
Towards the apex, it supports the anterior papillary muscle of the tricuspid valve and from this point crosses to the parietal wall of the right ventricle as the moderator band.
Absence of the moderator band or of the septal papillary muscle should be viewed as congenital cardiac defects even though no haemodynamic abnormality is produced.
Raghavendra et al showed 80% specimens with moderator band as arising from the lower segment of crista supraventricularis.
The ventricular endocardium continued as the moderator band endocardium and became thickas compared to ventricular endocardium (Figure 12).
Similarly [34] in ox and goat reported that moderator band contained bundles of Purkinje fibers and nerve fibers separated by connective tissue.
The right side of the heart (right ventricle) can have a large moderator band, which is a benign structure frequently seen toward the tip of the ventricle especially when it is enlarged.