We need you! See something you could improve? Make an edit and help improve WikSM for everyone.

Iliocostalis

From WikiSM
Jump to: navigation, search

Structure

  • Most lateral portion of Erector Spinae
  • Extends from sacrum to cervical spine
  • Subsegments
    • Iliocostalis Lumborum (Sacrolumbalis)
    • Iliocostalis Thoracis (Iliocostalis Dorsi)
    • Iliocostalis Cervicis (Cervicalis Ascendens)

Origin

  • Sacrum
  • Iliac Crest
  • Spinous process of lumbar vertebrae and thoracic vertebrae T11-T12
  • Angle of ribs

Insertion

  • Rib angles
  • Transverse process of vertebrae C4-C7

Actions

  • Bilateral: Extension of trunk, cervical spine, and head
  • Unilateral: Sidebending of trunk, cervical spine, and head to same side

Vascular Supply

  • Occipital Artery (Muscular branches)
  • Deep Cervical Artery
  • Posterior Intercostal Arteries
  • Subcostal Arteries
  • Lumbar Arteries
  • Lateral Sacral Artery

Nerve

  • Spinal nerves C4-S5 (Dorsal Rami)

Clinical Significance

See Also

References

Created by:
Chris Hauglid on 20 April 2020 06:12:00
Authors:
Last edited:
20 April 2020 08:21:24
Category:

Retrieved from "https://wikism.org/w/index.php?title=Iliocostalis&oldid=9786"