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Stack #3127643
| Muscle | Origin | Insertion | Action | Innervation |
|---|---|---|---|---|
| posterior scalene | transverse processes 6-7 | rib 2 | lateral bending | cervical spinal |
| splenius capitus | ligamentum nuchae and spinous process c7-t4 | occiptal bone and mastoid process | extension and ipsilateral rotation | cervical spinal |
| splenius cervicus | upper thoracic spinous processes | cervical transverse processes | extension ipsilateral rotation | cervical spin |
| sub-occiptal | c1-2 | occiput c1 | head extensions , ipsilateral rotaiton | cervical spinal |
| rectus abdominis | pubic crest and symphysis | costal cartilage and xiphoid process | trunk flexion | thoracic spinal |
| external oblique | ribs 5-12 | iliac crest and aponeurosis | trunk flexion, ipsilateral bending, contralateral rotation | thoracic spinal |
| internal oblique | iliac crest and thorocolumbar fascia | lower ribs and aponeurosis | trunk flexion, ipsilateral bending and ipsilateral rotation | thoracic spinal |
| treansverse abdominis | iliac crest, thorocolumbar fascia, lower ribs | aponeurosis | compress abdominals | thoracic spinal |
| erector spinae group | transverse processes of all | mastoid process posterior ribs spinous processes | vertebral extension ipsilateral bending | spinal nerves |
| semispinalis capitis | transver processes cervical and upper thoracic | occipital | head and neck extension | spinal |
| multifidi | trransverse processes of lower thoracic | spinous processes | vertebral extension contralateral rotation | spinal |
| rotares | trasnverse processes of cervical and lumbar | spinous processes | vertebral extension contralateral rotation | spinal |
| serratus posterior superior | upper thoracic spinous process | psoterior upper ribs | expands the ribs | thoracic spinal |
| serratus posterior inferior | lumbar spinous process | posterior lower ribs | depresses the ribs | thoracic spinal |
| masseter | closes mouth | tirgeminal | ||
| temporalis | closes mouth | trigeminal | ||
| medial pterygoid | closes mouth | trigeminal | ||
| lateral pterygoid | opens mouth | trigeminal | ||
| external intercostal | ribs | rib below origin | elevates ribs | thoracic spinal |
| internal intercostal | rib | rib below origin | dpresses ribs | thoracic spinal |
| diaphragm | sternum, ribs, lumbar vertebrae | central tendon | increases rib size | phrenic nerves |
| quadratus lumborum | posterior iliac crest | transverse processes 12th rib | ipsilateral bending | lumbar plexus |
| sternocleidomastoid | manebrium and clavicle | mastoid process and lateral occiptal | contralateral rotation lateral bending | CN IX |
| anterior scalene | transverse process C3-6 | rib 1 | lateral bending | cervical spinal |
| middle scalene | trasnvrse process c2-7 | rib 1 | lateral bending | cervical spinal |