Skip to Content
Medical Term:

transversus thoracis (muscle)


internal muscle of thorax; origin, dorsal surface of xiphoid process and lower portion of dorsal surface of body of sternum; insertion, second to sixth costal cartilages; action, contributes to depression of ribs, narrowing chest; nerve supply, intercostal.

Synonym(s): musculus transversus thoracisTA, musculus triangularis sterni, sternocostalis muscle, transverse muscle of thorax

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.