Deep back

ORIGIN: rectus capitis posterior major

spinous process of C2

INSERTION: rectus capitis posterior major

nuchal line

ACTION: rectus capitis posterior major

extend head

proprioception

INNERVATION: rectus capitis posterior major

suboccipital n

BLOOD SUPPLY: rectus capitis posterior major

vertebral artery
descending branches of the occipital artery

ORIGIN: rectus capitis posterior minor

spinous process of C1

INSERTION: rectus capitis posterior minor

nuchal line

ACTION: rectus capitis posterior minor

extend head

proprioception

INNERVATION: rectus capitis posterior minor

suboccipital n.

BLOOD SUPPLY: rectus capitis posterior minor

vertebral artery
occipital artery (deep descending branch)

ORIGIN: obliquus capitis superior

transverse process of C1

INSERTION: obliquus capitis superior

nuchal line

ACTION: obliquus capitis superior

extend head

laterally flex head

proprioception

INNERVATION: obliquus capitis superior

suboccipital n.

BLOOD SUPPLY: obliquus capitis superior

vertebral artery
descending branches of the occipital artery

ORIGIN: obliquus capitis inferior

spinous process of C2

INSERTION: obliquus capitis inferior

transverse process of C1

ACTION: obliquus capitis inferior

extend head

laterally flex head

proprioception

INNERVATION: obliquus capitis inferior

suboccipital n.

BLOOD SUPPLY: obliquus capitis inferior

vertebral artery

deep descending branches of the occipital artery

ACTION: splenius

unilaterally: laterally flexes neck, rotates head to side of active muscles

bilaterally: extends head and neck

what muscle?

serratus posterior superior

ACTION: serratus posterior superior

proprioception

elevate ribs

what muscle?

serratus posterior inferior

ACTION: serratus posterior inferior

proprioceptions

depress ribs

ORIGIN: spinalis

common tendon, nuchal line, spinous processes C7-T1

INSERTION: spinalis

spinous processes of thoracic vertebrae, C2

ACTION: spinalis

unilaterally: laterally flexes vertebral column

bilaterally: extends vertebral column and head

INNERVATION: spinalis

dorsal rami of C3-L5

BLOOD SUPPLY: spinalis

dorsal branches of posterior intercostal, subcostal, and upper lumbar arteries

ORIGIN: longissimus

common tendon, transverse processes of T1-T5

INSERTION: longissimus

tubercle and angle of ribs 3-12, transverse processes and C2-C7

ACTION: longissimus

unilaterally: laterally flexes vertebral column

bilaterally: extends vertebral column and head

INNERVATION: longissimus

dorsal rami of C3-L5

BLOOD SUPPLY: longissimus

dorsal branches of posterior intercostal and lumbar arteries, lateral sacral arteries

ORIGIN: iliocostalis

common tendon (thoracolumbar fascia)

INSERTION: iliocostalis

angle of ribs 1-12

ACTION: iliocostalis

unilaterally: laterally flexes vertebral column

bilaterally: extends vertebral column and head

INNERVATION: iliocostalis

dorsal rami of C3-L5

BLOOD SUPPLY: iliocostalis

dorsal branches of posterior intercostal, subcostal, lumbar and lateral sacral arteries

ORIGIN: multifidus

lumbar: common tendon, posterior sacrum, PSIS

thoracic: transverse processes of T1-T12

cervical: articular processes of C3-C7

INSERTION: multifidus

transcerse processes of vertebrae located 2-4 segments superiorly

ACTION: multifidus

stabilizes vertebrae during local movements

INNERVATION: multifidus

dorsal rami of C4-S3

BLOOD SUPPLY: multifidus

occipital, deep cervical, and vertebral arteries

dorsal branches of posterior intercostal, lumbar arteries, and lateral sacral arteries

ORIGIN: rotatores

transverse processes of all vertebrae

INSERTION: rotatores

base of spinous processes, 1-2 segments superiorly

ACTION: rotatores

stabilize vertebrae and assist in local extension and rotatory movements

INNERVATION: rotatores

dorsal rami of C4-L4

BLOOD SUPPLY: rotatores

dorsal branches of posterior intercostal arteries

ORIGIN: semispinalis

transverse processes T10-C7

INSERTION: semispinalis

spinous processes of T4-C2

ACTION: semispinalis

extends head and cervical regions, rotates them contra-laterally

INNERVATION: semispinalis

dorsal rami of C1-T6

BLOOD SUPPLY: semispinalis

occipital, deep cervical, and vertebral arteries

dorsal branches of posterior intercostal arteries

ORIGIN: levatores costarum

transverse processes of C7-T10

INSERTION: levatores costarum

angle of the rib, 1-2 segments inferior to origin

ACTION: levatores costarum

elevate ribs

aid in lateral flexion of vertebral column

INNERVATION: levatores costarum

dorsal rami of C7-T11

ORIGIN: interspinales

superior surfaces of spinous processes of cervical and lumbar vertebrae

INSERTION: interspinales

inferior surfaces of spinous process of vertebra superior to vertebra of origin

ACTION: interspinales

aid in extension and rotation of vertebral column

INNERVATION: interspinales

dorsal rami of C3-L5

ORIGIN: intertransversarii

transverse processes of cervical, lower thoracic, and lumbar vertebrae

INSERTION: intertransversarii

transverse process of adjacent vertebrae

ACTION: intertransversaii

aid in lateral flexion of vertebral column

bilaterally: stabilize vertebral column

INNERVATION: intertransversaii

dorsal rami of C3-L5