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spinalis (thoracis, and cervicis) origin
spinous processes of upper and lower lumbar. ligamentum nuchae, spinous process c7
spinalis insertion
spinous processupper thoracis. spinous process of cervicals
spinalis action
extention back and neck, lat flex to same side
longissimus origin
common tendon, tvp uper 5 thoracic
longissimus insertion
lower 9 ribs ribs, tvps of thoracic. tvp cervical. mastoid process.
longissimuss action
laterally flex, extend back
iliocostalis origin
common tendon (ilium), post ribs 1-12
iliocostalis insertion
tvp lumbar 1-3 and post srfs 6-12.
post ribs, tvp lower cervicals.
iliocostalis action
laterally flex, extend
Multifidi origin
sacrum and tvp lumbar- cervical vert.
multifidi insertion
spinous process lubmr up to 2nd cervicals (span 2-4 verts) ////
multifidi action
rotate to opoosite side, extend back
rotatores origin
tvp lumbar-cervicals
rotatores insertion
spinous process lumbar to 2nd cervical (span 1-2 verts) /-/
rotatores action
rotate vert to opposite side, extend back
Semispinalis capitis origin
tvp c4-t5
semispinalis capitis insertion
between sup and inf nuchal lines occiput
cemispinalis actions
extend neck and head
splenius capitis origin
inf 1/2 ligamentum nuchae and spinous process c7-t4
splenius capitis insertion
mastoid process and lat portion of sup nuchal line
splenius capitis action
extend neck, rotate head and neck to same side, laterally flex
splenius cervicis origin
spinous process t3-t6
splenius ccervicus insertion
tvp c1-c3
splenius cervicus action
rotate head to same side, lat flex and extend neck.
