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back muscle oina
| Term | Definition |
|---|---|
| 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 |