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intrinsic Back Muscles

Erector Spinae – Longissumus – Functional Anatomy

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Erector Spinae – Iliocostalis – Functional Anatomy

Integrative Works is hosting some content on Patreon so that we can devote more time and energy to creating the resources that you need. Basically, the majority of our content is still available to the public. Content that is oriented toward bodywork professionals is available with a nominal subscription to Patreon. Log in to Patreon …

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Serratus Posterior Superior – Functional Anatomy

Here, you will find a functional overview of the anatomy of the serratus posterior superior. I also explore its role as a respiratory muscle. Afterward, I have links to related posts. Anatomy Overview Overview This muscle is the most superficial of the intrinsic back muscles and straps across the erectors, levator costae, and intrinsic spine muscles. Origin …

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Serratus Posterior Inferior – Functional Anatomy

Serratus Posterior Inferior Origin The spinous processes of T11-L2 Insertion the inferior border of the last four ribs, just lateral to the angle of the rib Function Its position indicates that it should extend and rotate the trunk, as well as assist in breathing, especially when breathing is forceful, or the trunk is contorted. It is, …

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Semispinalis Cervicis – Functional Anatomy

Overview Semispinalis cervicis fits between the deeper multifidi and the more superficial erectors and serratus anterior. It is a thin muscle that connects the transverse processes of the upper thoracic vertebrae with the mid-cervical vertebrae. Consequently, It is in a position to trap and compress the lower cervical vertebrae. Interestingly, the posterior rami of those …

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Quadratus Lumborum – Functional Anatomy

Quadratus lumborum, means “the square muscle in the low back.” It connects the lumbar vertebrae to the ribs and iliac crest trapping T12 and the sacrum its attachments. Quadratus Lumborum has 3 sections; iliolumbar, lumbocostal and lateral. They perform different functions, have different trigger point patterns and are best addressed as different muscles. Quadratus lumborum varies …

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Rotatores and Multifidi – Functional Anatomy

Multifidi and Rotatores Multifidi and rotatores form a thick band of muscles that fill the lamina groove. They connect the proximal transverse process of a vertebra to the spinous process of the vertebrae above it. The shortest strand is the deepest. As the strands lengthen to span more vertebrae, they become more superficial. This forms a thick web …

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