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Origins, Insertions, Actions and Innervations

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Muscle
Origin
Insertion
Action
Innervation
Muscle Group Name
Rectus Capitus Major, Minor and Oblique Capitis Major, Minor   -----   ----   show Dorsal Ramus of C1, Suboccipital Nerve   Suboccipital Muscles  
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Intertransversarii   transverse process   transverse process of adjacent vertebrae   lateral flexion of spine   show Segmental Muscle Group  
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Interspinales   spinous process   show extension of the spine (brings segments together)   dorsal rami of mixed spinal nerves   Segmental Muscle Group  
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Multifidus   Sacrum, ilium, transverse process of lumbar and thoracic, lumbar and cervical vertebrae   show stabilize vertebral column   dorsal rami of mixed spinal nerve   Transversospinales Group  
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Semispinalis Cervicis (Thoracis, Cervicis, Capitis)   transverse process   show extends head and vertebral column and rotates contralaterally(except capitis)   dorsal rami of mixed spinal nerve   Transversospinales Group  
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Rotatores   transverse process and articular process   spinous processes (lamina), spans 1-2 levels   rotation to opposite side, extension   show Transversospinales Group  
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Splenius Cervicis   T3-6   C1-3   bilaterally extends, unilaterally flexes and rotates neck to ipsilateral side   dorsal rami of mixed spinal nerves   show
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Splenius Capitis   C7-T4, ligamentum nuchae   mastoid process, superior nuchal line   bilaterally extends, unilaterally flexes and rotates to ipsilateral side   show Spinotransversalis Group  
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show spinous process   spinous process and occiput   extends vertebral column and head   dorsal rami of mixed spinal nerve   Erector Spinae Group  
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Longissimus(capitis, cervicis, thoracis)   common tendon, transverse process   show extends and laterally bends vertebral column or head   dorsal rami of mixed spinal nerve   Erector Spinae Group  
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Iliocostalis (cervicis, thoracis, lumborum)   common tendon, ilium, angle of ribs   ribs and transverse processes(in cervical region)   show dorsal rami from mixed spinal nerves   Erector Spinae Group  
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Created by: jpowley
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