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back muscle oina

TermDefinition
Serratus Posterior Superior origin and insertions O: C5-T2 I:ribs 2-5
Serratus posterior Superior action Elevates ribs assists with inspiration
Serratus Posterior Superior Nerve innervation T2-T5
Serratus Posterior Inferior origin and insertion O:T11-L2 I: ribs 9-12
Serratus Posterior Inferior Action assits in expiration
Serratus Posterior Inferior Nerve Innervation T9-T12
Iliocostalis Origin and Insertions O: Iliac crest, sacrum, lumbar vertebrae I: Lower ribs, cervical transverse processes
Iliocostalis Action A: Extends back bilaterally, lateral flexion unilatterally
Iliocostalis Nerve Innervation N: Posterior Rami of Spinal Nerves
Longissimus Origin and Insertion O: broad tendon from posterior part of iliac crest, posterior surface of sacrum I: rib tubercles/ angles, transverse processes in cervical and thoracic regions, mastoid process
Longissimus Action A: extend back bilaterally, lateral flexion unilaterally
Longissimus Nerve innervation N: Posterior Rami of spinal nerves
Spinalis Origin and Insertion O: Spinous process I: spinous process 6 levels inferior
Spinalis action A: lateral flexion of spine
Spinalis Nerve innervation N: posterior Rami of Spinal Nerves
Interspinalis Origin and Insertion O: Superior surface of spinous processes in cervical and lumbar regions I: inferior surface of spinous processes 1 Level below origin
Interspinalis Action A: extension/ rotation of spine
Interspinalis Nerve innervation N: Posterior Rami of Spinal Nerves
Intertransversarii Origin and Insertion O: transverse process of cervical and lumbar regions I: transverse processes of adjacent vertebrae
Intertransversarii Action A: lateral flexion of spine
Intertransversarii Nerve innervations N: posterior/ anterior rami of spinal nerves
Levator Costarum Origin and Insertion O: Transverse process C7 and T1-T11 I: rib tubercle and angle inferelaterally
Levator Costarum Action A; elevate ribs, assist respiration, assist lateral flexion of spine
Levator Costarum Nerve innervation N: posterior rami C8-T11
Semispinalis Origin and Insertion O: Transverse processes of C4-T10 I: occipital bone, spinous processes spanning 4-6 vertebrae
Semispinalis Action A: extends spine and rotates contralaterally
Semispinalis Nerve innervation N: Posterior rami of spinal nerves
Multifidus Origin and Insertions O:posterior sacrum, posterior superior iliac spine, articular process c4-c7 I: 2-4 segments above origin
Multifidus Action A: unilateral contraction rotates contralaterally, stabilizes local movements
Multifidus Nerve innervation N: posterior rami of spinal nerves
Rotatores origin and insertions O: transverse processes of vertebrae I: Transverse processes and spinous processes 1 or 2 segments above origin
Rotatores Action A: stabilizes and assists local extension and rotation
Rotatores Nerve innervation N:Posterior rami of spinal nerves
Created by: Ilsa2019
 

 



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