Rectus Capitis Posterior Minor

 

Original Editor Oyemi Sillo

Lead Editors - Oyemi Sillo, Evan Thomas, Kim Jackson and Tarina van der Stockt  


Description

Musculus rectus capitis posterior minor is a member of the suboccipital group of muscles along with rectus capitis posterior major, obliquus capitis superior, and obliquus capitis inferior.[1]

Rectus capitis posterior minor.png Rectus capitis posterior minor muscle animation small.gif

Origin

Tubercle on the posterior arch of the atlas (C1)[2]
 

Insertion

Medial portion of the inferior nuchal line of the occipital bone[2]
 

Nerve Supply

Suboccipital nerve or dorsal ramus of cervical spinal nerve (C1)[3]
 

Blood Supply

The muscle receives its blood supply from the vertebral artery and the deep descending branch of the occipital artery.[3]
 

Action

Extension of the head[2]
 

Function

A postural muscle that monitors the position of the head.[3]
 

References

  1. Gray's Anatomy of Human Body, Bartleby.com edition. New York: 2000. http://www.bartleby.com/107/116.html
  2. 2.0 2.1 2.2 http://www.wheelessonline.com/ortho/rectus_capitis_posterior_minor_1
  3. 3.0 3.1 3.2 http://www.anatomyexpert.com/structure_detail/5211/