Spine part 1 Flashcards
What muscles comprise the Erector Spinae Group?
Spinalis
Longissimus
Iliocostalis
Erector Spinae Action:
Unilaterally: Laterally flex the vertebral column to the same side
Bilaterally: Extend the vertebral column
Erector Spinae Origin
Spinous process of upper lumbar and lower thorasic, ligammentum nuchae, spinous proces of C7
Erector Spinae Insertion
Various attachments of posterior ribs, spinous and transverse processes of T and C vertibrate and mastoid process of temporal bone
Erector Spinae Insertion
Various attachments of posterior ribs, spinous and transverse processes of T and C vertibrate and mastoid process of temporal bone
Spinalis Origin and Insertion
(Most midline) Spinous process to spinous process
Longissimus Origin and Insertion
(Middle muscle) Transverse to transverse and up to the mastoid process
Iliocostalis Origin
(Furthest out costal region) Common tendon and posterior surface of rib 1-12
Iliocostalis Insertion
Transverse processes of L 1-3
transverse process of lower Cervicals,
posterior surface of ribs 1-12
Transversospinalis Group
Multifidi
Rotatores
Semispinalis Capitis
Splenius Capitis
Splenius Cervicis
Multifidi and Rotatores Action
Unilaterally: Rotate the vertebral column to the opposite side
Bilaterally: Extend the vertebral column
Multifidi Origin
Sacrum and transverse processes of lumbar through C vertibrates
Spans 2-4 vertebrates
Rotatores Origin
transverse processes of lumbar through C vertibrates
Spans 1-2 vertebrates
Multifidi and Rotatores Insertion
Spinous process of lubar vertebrae through 2nd cervical vertibrae
M: 2-4
R: 1-2
Semispinalis Capitis Action
Extend the vertebral column and head
Semispinalis Capitis Origin
Trans process of C-4-T-5
Semispinalis Capitis Insertion
Between the superior and inferior nuchal lines of the occiput
Splenius Capitis and Cervicis Action
Unilaterally:
Rotate the head and neck to same side
Laterally flex the head
Bilaterally:
Extend the head and neck
Splenius Capitis origin
inferior 1/2 of ligamentum nuchae and spinous process of C-7-T-4
Splenius Capitis Insertion
Mastoid process and lateral portion of superior nuchal line
Splenius Cervicis Origin
Spinous process of t-3 to T-6
Splenius Cervicis Insertion
Transverse process pf C-1 to C-3
Suboccipitals
Rectus Capitis Posterior Major
Rectus Capitis Posterior Minor
Oblique Capitis Superior
Oblique Capitis Inferior
Action: Rotate and tilt the head back into extension
Rectus Capitis Posterior Major
Rectus Capitis Posterior Minor
Oblique Capitis Superior
