Overview of anatomy Longissimus is part of the erector spinae group, which also includes iliocostalis and spinalis. Like the others, longissimus has three sections. However, one of the sections has two parts, so four sections. As a result, often, the explanation of anatomy is simplified. That’s understandable, as it is both complex and variable. All […]
Erector Spinae – Longissumus – Functional Anatomy Read More »
Overview of anatomy Iliocostalis is part of the erector spinae group, which also includes longissimus and spinalis. Iliocostalis, like the others, has 3 sections. The anatomy is often simplified. That’s understandable as it is both complex and variable. All 9 sections of the erector spinae are gathered into a fascial compartment that extends along the
The anatomy of thoracic outlet structures is complex in several ways. First, many of the bones are both origin and insertion for muscles. Second, several of the muscles have statistically significant variations in cadaver studies. Here, you will find a brief overview of Thoracic Outlet Syndrome followed by a walk-through of the structures from back
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 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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Overview Semispinalis capitis anatomy is significant for managing pain. It is a large muscle that extends the head, perpetuates forward head posture, and squeezes the greater occipital nerve. Origin Insertion Function Nerve The functional anatomy of semispinalis capitis is significant regarding upper cervical pain. It attaches to the occiput and then usually skips the first
Semispinalis Thoracis Semispinalis Thoracis connects T7-T10 to C6-T4 trapping T5-T6 in the middle. Origin – transverse processes of T6-T10 Insertion – Spinous processes of T1-T4 Function – Extension and some rotation of the thoracic vertebrae. Wikipedia Entry for Semispinalis muscles
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
Overview Rectus abdominis seems simple but is notably variable. It is a broad, flat muscle on the anterior abdomen with fibers that connect the pubic bone to the arch of the ribs. It is one of those muscles that are hard to label with an “origin” or “insertion,” but we’ll do that for illustrative purposes.
Overview 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 between its attachments. Origin Insertion Function Innervation The innervation suggests that it is an abdominal muscle, but most practitioners see it as a low-back muscle. Quadratus Lumborum has
