Name

# Transversus Thoracis

Pronunciation

(trans-vurs-us tho-ra-sis)

Notes

Transversus thoracis arises from the posterior surface of the sternum and xiphoid (to the level of the third costal cartilage) and extends onto the internal surface of the second (third) to sixth costal cartilages. Transversus thoracis may extend to the first rib. Absence on one or both sides has been recorded. It is sometimes divided into separate fasciculi which may number from two to six, and its division into two lamellae has also been observed. This muscle was Hyrtl's candidate for the most variable in the body.