Iliocostalis thoracis at a glance
- What it is
- The thoracic part of the iliocostalis column of erector spinae.
- Location
- Origin: angles of the lower six ribs. Insertion: angles of the upper six ribs and the transverse process of C7.
- Function
- Extends the thoracic spine and bends it laterally.
- Body system
- Muscular · paired (left and right)
- FMA ID
- FMA22742 (Foundational Model of Anatomy)
Key facts
- Innervation: posterior rami of spinal nerves
- It links iliocostalis lumborum below with iliocostalis cervicis above, slip by slip across the rib angles.
Structures next to the iliocostalis thoracis
The nearest named structures in the 3D model, measured from the centre of each part:
- Levatores costarum longi · muscular
- Levatores costarum breves · muscular
- Inferior pulmonary vein · cardiovascular
- Serratus anterior · muscular
- Semispinalis thoracis · muscular
- Sixth rib · skeletal
- Descending thoracic aorta · cardiovascular
- Dorsal scapular artery · cardiovascular
- Seventh rib · skeletal
- Seventh thoracic vertebra · skeletal
References
- Foundational Model of Anatomy: Iliocostalis thoracis (FMA22742). EMBL-EBI Ontology Lookup Service.
- OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
- Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.
Related anatomy
Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.