Obliquus capitis superior muscle

Obliquus capitis superior muscle
Obliquus capitis superior muscle
Obliquus capitis superior muscle.png
Deep muscles of the back. (Obliq. super. labeled at upper left.)
Latin musculus obliquus capitis superior
Gray's subject #116 402
Origin lateral mass of atlas
Insertion    lateral half of the inferior nuchal line
Artery
Nerve suboccipital nerve
Actions

The Obliquus capitis superior muscle arises from the lateral mass of the atlas bone. It passes superiorly and posteriorly to insert into the lateral half of the inferior nuchal line. It is innervated by the suboccipital nerve, the dorsal ramus of the first spinal nerve.

It acts at the atlanto-occipital joint to extend the head and flex the head to the ipsilateral side.

Additional images

  • Occipital bone. Outer surface.

  • Base of skull. Inferior surface.

  • Obliquus capitis superior's relationship to other suboccipital muscles.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eList of muscles of head and neck: the neck (TA A04.2, GA 4.387)
Cervical

CN VII (superficial, PC): platysma
CN XI (deep): sternocleidomastoid

C1–C6 (anterior): Prevertebral muscles: longus (capitis, colli)

C3–C8 (lateral): scalene (anterior, medius, posterior)
Suboccipital

C1: rectus capitis posterior (major, minor) · obliquus capitis (inferior, superior)

C1–C6 (anterior): Prevertebral muscles: rectus capitis (anterior, lateralis)
Suprahyoid
Infrahyoid/strap
Fasciae
Pharynx
Larynx

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/devp/hist

noco(m, s, c)/cong(d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

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