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| Levatores costarum muscles | |
|---|---|
 Deep muscles of the back. (Levatores costarum labeled vertically at center left.) | |
| Details | |
| Origin | Transverse processes of C7 to T11 vertebrae |
| Insertion | Superior surfaces of the ribs immediately inferior to the preceding vertebrae |
| Nerve | Dorsal rami C8-T11 (Intercostal nerves) |
| Actions | Assists inelevation of the thoracic rib cage |
| Identifiers | |
| Latin | musculi levatores costarum |
| TA98 | A04.4.01.009 |
| TA2 | 2308 |
| FMA | 71312 |
| Anatomical terms of muscle | |
Thelevatores costarum (/ˌlɛvəˈtɔːriːzkəˈstɛərəm/), twelve in number on either side, are small tendinous and fleshy bundles, which arise from the ends of the transverse processes of the seventhcervical and upper eleventhoracic vertebrae
They pass obliquely downward and laterally, like the fibers of theIntercostales externi, and each is inserted into the outer surface of therib immediately below thevertebra from which it takes origin, between the tubercle and theangle (Levatores costarum breves).
Each of the four lower muscles divides into two fasciculi, one of which is inserted as above described; the other passes down to the second rib below its origin (Levatores costarum longi).
They have a role inforceful inspiration.[1]
This article incorporates text in thepublic domain frompage 403 of the 20th edition ofGray's Anatomy(1918)
