Hiérarchie anatomique

Anatomie générale > Muscles; Système musculaire > Muscles du thorax > Muscle transverse du thorax

Traductions

Description

Origin: Costal cartilages of last 3-4 ribs, body of sternum, xiphoid process

Insertion: Ribs/costal cartilages 2-6

Artery: Intercostal arteries

Nerve: Intercostal nerves

Action: Depresses ribs

Description:
The Transversus thoracis (Triangularis sterni) is a thin plane of muscular and tendinous fibers, situated upon the inner surface of the front wall of the chest. It arises on either side from the lower third of the posterior surface of the body of the sternum, from the posterior surface of the xiphoid process, and from the sternal ends of the costal cartilages of the lower three or four true ribs. Its fibers diverge upward and lateralward, to be inserted by slips into the lower borders and inner surfaces of the costal cartilages of the second, third, fourth, fifth, and sixth ribs. The lowest fibers of this muscle are horizontal in their direction, and are continuous with those of the Transversus abdominis; the intermediate fibers are oblique, while the highest are almost vertical. This muscle varies in its attachments, not only in different subjects, but on opposite sides of the same subject.


Cette définition contient du texte provenant d'une édition publique de Gray's Anatomy (20eme édition Américaine de "Gray's Anatomy of the Human Body" publiée en 1918 - http://www.bartleby.com/107/).

Images

Télécharger e-Anatomy

Utilisateurs mobile et tablette, vous pouvez télécharger e-Anatomy sur l'Appstore ou sur GooglePlay.

e-Anatomy sur l'Appstore e-Anatomy sur Googleplay