Anatomy

Anatomy: Back – Trapezius

Trapezius The latissimus dorsi might be the largest muscle on the back, the trapezius is a close second. The trapezius is easy to find, most already know the name or its nickname “trap(s)”, and many could tell you an exercise to work it pretty hard. What most do not know, however, is how much theREAD MORE

Anatomy: Back – Multifidus

Action Stabilizes vertebrae and extends spine Multifidus are thin and fleshy muscles that fill up the groove on either side of the vertebrae. These little guys are very important for spinal and vertebral stabilization. Origin Laminae of vertebra Insertion Spinous processes two to three levels above Antagonist rectus abdominus

Anatomy: Back – Rotatores muscles

Action The function of the rotatores is not as immediately obvious as other muscle. They possibly assist with the extension of the lumbar vertebrae, but they also have a large number of proprioceptors. These proprioceptors lead many to believe the rotatores primary function is postural control, and also influence the activity of the larger musclesREAD MORE

Anatomy: Neck – Transversospinales Overview

Definitions: 1. the group of deep back muscles that originate from transverse processes of the vertebrae and pass to spinous processes of higher vertebrae; they act as rotators and include the semispinalis (capitis, cervicis, thoracis), multifidus, and rotatores (cervicis, thoracis, lumborum) muscles. All are innervated by dorsal primary rami of spinal nerves. Synonyms: musculi transversospinales,READ MORE

Anatomy: Back – Latissimus dorsi

Action Extends, adducts and medially rotates arm. Origin There is no simple origin for the lats, because it originates from so much different tissue. From the lower back, to the spine, and the scapula, the lats are a giant sheet of muscle that covers a vast portion of your back. Spinous processes of vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferiorREAD MORE

Anatomy: Back – Spinalis

Overview Every part of the spinalis, which incorporates the spinalis dorsi, spinalis cervisis, spinalis capitis, is intimately intertwined with other muscles of the back. Positioned medially to the spine, spinalis is hard to separate and distinguish. Action Laterally: flexes the head and neck to the same side Bilaterally : extends the vertebral column What doesREAD MORE

Anatomy: Back – Longissimus

Longissimus Overview Longissimus is the longest of the three parts of erector spinae, and it also has three parts! The back is going to start to get a little confusing, so bear with me. The longissimus is subdivided into the three parts of the spine that it manipulates: longissimus capitis, longissimus thoracis, and longissimus cervicis.READ MORE

Anatomy: Back – Iliocostalis

Overview Illiocostalis is another three part muscle of the three part erector spinae. It is composed of the iliocostalis lumborum, iliocostalis thoracis, iliocostalis cervisis. Action Extends the vertebral column – once again, the extension of the vetebral column is the action, but in the gym we are using them to keep that neutral spine under load. OriginREAD MORE

Anatomy: Back – Erector Spinae Overview

Erector Spinae/ Sacrospinalis/ Extensor Spinae Overview Running the full length of your vetebral column, erector spinae and its importance cannot be understated! Both in life and in the gym, erector spinae is instrumental in protecting you spine. Erector spinae is not just one muscle, but rather a bundle of muscle and tendon. Rather than treatingREAD MORE

Anatomy: Neck – Splenius Capitis

Action Extends, rotates, and laterally flexes the head. Origin simple: C-7 to T-6 detailed: ligamentum nuchae, spinous processes of C7-T6 Insertion simple: Mastoid process detailed: Mastoid process

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