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Muscles of Back
Muscular System

Muscles of Back

Musculi dorsi

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The muscles of the back include those that move the vertebral column, help maintain posture, and are involved in movements of the pectoral (shoulder) girdle and arm.

For classification purposes, the muscles of the back can be arbitrarily divided into two distinct groups:

- intrinsic muscles of back;

- extrinsic muscles of back.

The intrinsic muscles lie deep to the thoracolumbar fascia, while the extrinsic muscles lie superficial to it.

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Muscles of the back: Video, Anatomy & Definition

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As described by Bogduk (1997), the lumbar back muscles are those muscles that lie behind the plane of the transverse processes and which exert an action on the lumbar spine.

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