Suboccipital muscles

Suboccipital muscles: Anatomy & FunctionAnatomy, function, blood supply and innervation of the suboccipital muscles
~ 4 min

Some sources consider the posterior cervical region to be included in the back region.

As discussed in the previous pdf-notes, the back region has the following borders:

  • The superior border consists of the external occipital protuberance and the superior nuchal line

  • The inferior border consists of the sacro-iliac joints, posterior segments of the ilium bones crests, coccyx

  • The lateral border is the posterior median line

    Borders of the back region
    Borders of the back region
  • There are several so-called suboccipital muscles (mm. suboccipitales) located within the posterior cervical region.

  • Rectus capitis posterior minor muscle (m. rectus capitis posterior minor)

Rectus capitis posterior minor muscle (m. rectus capitis posterior minor)
Rectus capitis posterior minor muscle (m. rectus capitis posterior minor)
Rectus capitis posterior minor muscle
(m. rectus capitis posterior minor)

Origin: posterior tubercle of the atlas

Insertion: medial part of the inferior nuchal line

Function: with bilateral contraction, it extends the head, with unilateral contraction, it turns the head ipsilaterally (in its own direction)

Innervation: occipital nerve, which is a posterior branch of the spinal nerve (C1)

Blood supply: deep cervical artery

  • Rectus capitis posterior major muscle (m. rectus capitis posterior major)

    Rectus capitis posterior major muscle (m. rectus capitis posterior major)
    Rectus capitis posterior major muscle (m. rectus capitis posterior major)
    Rectus capitis posterior major muscle
    (m. rectus capitis posterior major)

    Origin: spinous process of the C2 vertebra (axis)

    Insertion: lateral part of the inferior nuchal line

    Function: with bilateral contraction, it extends the head, with unilateral contraction, it turns the head ipsilaterally (in its own direction)

    Innervation: occipital nerve, which is a posterior branch of the spinal nerve (C1)

    Blood supply: deep cervical artery

  • Obliquus capitis inferior muscle (m. obliquus capitis inferior)

    Obliquus capitis inferior muscle (m. obliquus capitis inferior)
    Obliquus capitis inferior muscle (m. obliquus capitis inferior)
    Obliquus capitis inferior muscle
    (m. obliquus capitis inferior)

    Origin: spinous process of the C2 vertebra (axis)

    Insertion: transverse process of the C1 vertebra (atlas)

    Function: with bilateral contraction, it extends the head, with unilateral contraction, it turns the head ipsilaterally (in its own direction)

    Innervation: occipital nerve, which is a posterior branch of the spinal nerve (C1)

    Blood supply: deep cervical artery

  • Obliquus capitis superior muscle (m. obliquus capitis superior)

Obliquus capitis superior muscle (m. obliquus capitis superior)
Obliquus capitis superior muscle (m. obliquus capitis superior)
Obliquus capitis superior muscle
(m. obliquus capitis superior)

Origin: transverse process of the C1 vertebra (atlas)

Insertion: occipital bone between the superior and inferior nuchal lines

Function: with bilateral contraction, it extends the head, with unilateral contraction, it turns and tilts the head ipsilaterally (in its own direction)

Innervation: occipital nerve, which is a posterior branch of the spinal nerve (C1)

Blood supply: deep cervical artery

Dictionary

Suboccipital muscles

Suboccipital muscles
mm. suboccipitales
Rectus capitis posterior minor muscle
m. rectus capitis posterior minor
Rectus capitis posterior major muscle
m. rectus capitis posterior major
Obliquus capitis inferior muscle
m. obliquus capitis inferior
Obliquus capitis superior muscle
m. obliquus capitis superior
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