Moderator band (heart)

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Moderator band
Interior of right side of heart. (Septomarginal trabecula visible at bottom right, but not labeled.)
Details
Identifiers
Latintrabecula septomarginalis
TA98A12.1.02.020
TA24050
FMA7272
Anatomical terminology

The moderator band (also known as septomarginal trabecula

ventricular septum.[2]

Structure

The moderator band is located in the right ventricle.[2][3] The moderator band connects the base of the anterior papillary muscles of the tricuspid valve to the ventricular septum.[2]

Function

The moderator band is important because it carries part of the right bundle branch of the

conduction system of the heart to the anterior papillary muscle.[1] This shortcut across the chamber of the ventricle ensures equal conduction time in the left and right ventricles, allowing for coordinated contraction of the anterior papillary muscle.[1]

Clinical significance

The moderator band is often used by

.

History

From its attachments it was thought to prevent overdistension of the ventricle, and was named the "moderator band". It was first described by Leonardo da Vinci in his exploration of human anatomy.

Additional images

  • Location of the moderator band
    Location of the moderator band

See also

References

External links