Obliquus capitis superior muscle

Source: Wikipedia, the free encyclopedia.
Obliquus capitis superior muscle
ipsilateral side
Identifiers
Latinmusculus obliquus capitis superior
TA98A04.2.02.006
TA22251
FMA32527
Anatomical terms of muscle]

The obliquus capitis superior muscle (

posterior ramus of the first cervical spinal nerve
).

It acts at the atlanto-occipital joint[citation needed] to extend the head and bend the head to the same side.

Anatomy

The obliquus capitis superior muscle is one of the suboccipital muscles. It forms the superolateral boundary of the suboccipital triangle. It extends superoposteriorly from its inferior attachment to its superior attachment, becoming wider superiorly.[1]

Attachments

The muscle's inferior attachment is at the superior surface of the

atlas (C1).[1][2]

Its superior attachment is onto the lateral portion of

Innervation

The muscle receives motor innervation from the

Actions/movements

The muscle extends[1] and (ipsilaterally) laterally flexes the head.[1][2]

Additional images

  • Position of obliquus capitis superior (shown in red). Animation.
    Position of obliquus capitis superior (shown in red). Animation.
  • Still image. Posterior view.
    Still image. Posterior view.
  • Deep muscles of the back (obliquus capitis superior labeled at upper left)
    Deep
    muscles of the back
    (obliquus capitis superior labeled at upper left)
  • Occipital bone. Outer surface. Muscle attachments are shown as red circles.
    Occipital bone. Outer surface. Muscle attachments are shown as red circles.
  • Base of skull. Inferior surface. Muscle attachments are shown as red circles.
    Base of skull. Inferior surface. Muscle attachments are shown as red circles.

References

  1. ^
    OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link
    )
  2. ^ .

External links