Intermediate Intrinsic Muscles of the Back

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Last updated 1:56 AM on 10/12/26
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8 Terms

1
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Erector Spinae Muscle Groups

Iliocostalis, Longissimus, Spinalis

2
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Erector Spinae Proximal Attachment (Origin)

Iliac Crest, Posterior Surface of the Sacrum, Sacro-Iliac Ligaments, Sacral and Inferior Lumbar Spinous Processes, Supraspinous Ligament

3
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Iliocostalis Distal Attachment (Insertion)

Angles of Lower Ribs, Cervical Transverse Processes

4
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Longissimus Distal Attachment (Insertion)

Ribs between Tubercles, Angles to Transverse Processes in Thoracic and Cervical Regions, Mastoid Process

5
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Spinalis Distal Attachment (Insertion)

Spinous Processes in Upper Thoracic Region, Cranium

6
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Erector Spinae (ILS) Innervation

Posterior Rami of Spinal Nerves

7
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Erector Spinae (ILS) Action Bilaterally

Extend Vertebral Column and Head

8
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Erector Spinae (ILS) Action Unilaterally

Laterally Flex Vertebral Column