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IOANS

muscles of the Trunk Posterior

Muscle Origininsertion actioninnervation
Erector Spinae Iliocostal portion iliac crest and lower ribs angle of upper ribs and transverse processes of cervical vereibrae rotates head to same side spinal nerves
Erector Spinae Longissimus Portion transverse processes at lower levels transverse processes at upper levels and mastoid process rotates head to same side Spinal nerves
Erector Spinae spinalis portion spinous processes below spinous processes above Bilateral: neck and trunk extension unilateral: neck and trunk bending spinal nerves
Transversospinalis Semispinallis Transverse Process "spans 5 vertebra" spinous process of vertebra above Bilateral: Neck and Trunk extension Unilateral: Neck And trunk rotation to opposite side Spinal Nerves
Transversopinalis Rotatores Transverse process "Rotators spans 1 Vertebra" spinous process of vertebra above Bilateral: Neck and Trunk extension Unilateral: Neck And trunk rotation to opposite side Spinal nerves
transversospinalis Multifundus Transverse Process "Spans 2-4 vertebra" spinous process of vertebra above Bilateral: Neck and Trunk extension Unilateral: Neck And trunk rotation to opposite side Spinal nerves
intertransversarii transverse process below Transverse process above Neck and trunk lateral bending Spinal nerves
Quadratus lumborum iliac crest 12Th Rib and Transverse processes of all five lumbar vertebrae Trunk and lateral bending 12th Thoracic and First lumbar nerves
Created by: j2dap595
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