Deep Back: Suboccipital Muscles

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Rectus capitus posterior major PA (Origin)

SP of C2
Rectus capitus posterior major DA (Insertion)

Lateral portion of inferior nuchal line & occipital bone inferior to it
Rectus capitus posterior major Innervation

Dorsal ramus C1 (Suboccipital nerve)
Rectus capitus posterior major Blood Supply

Branch off the external carotid
Rectus capitus posterior major Actions

Unilaterally: ipsilateral rotation of the head

Bilaterally: extends the head
Rectus capitus posterior minor PA (origin)

Posterior tubercle C1
Rectus capitus posterior minor DA (Insertion)

Medial portion of inferior nuchal line & occipital bone between it & foramen magnum
Rectus capitus posterior minor Innervation

Dorsal ramus C1 (suboccipital nerve)
Rectus capitus posterior minor Blood Supply

Branch off the external carotid
Rectus capitus posterior minor Actions

Extends the head
Obliquus capitus inferior PA (Origin)

SP of C2 along last portion & lamina of C2
Obliquus capitus inferior DA (Insertion)

TP of C1 at it inferoposterior aspect
Obliquus capitus inferior Innervation

Dorsal ramus C1 (Suboccipital nerve)
Obliquus capitus inferior Blood Supply

Branch off the external carotid
Obliquus capitus inferior Actions

Ipsilateral rotation of the head
Obliquus capitus superior PA (Origin)

TP C1 at upper surface
Obliquus capitus superior DA (Insertion)

Occiput bone between inferior & superior nuchal lines, lateral to semispinalis, overlapping DA of rectus capitus posterior major
Obliquus capitus superior Innervation

Dorsal ramus C1 (Suboccipital nerve)
Obliquus capitus superior Blood Supply

Branch off the external carotid
Obliquus capitus superior Actions

Ipsilateral SB the head

Author

paffman7

34810

Card Set

Deep Back: Suboccipital Muscles

Description

Muscle Chart Deep Back

Updated

2010-09-15T02:15:45Z

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