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Home » Sitemap » Muscle Bulking Theory » Workout Programs - A Guide Map to Health and Fitness » Back - Tone and Build Your Muscles » Back Anatomy – How to Use Science to Build Strong Back Muscles
Back - Tone and Build Your Muscles

Back Anatomy – How to Use Science to Build Strong Back Muscles

Terry ClarkBy Terry ClarkSeptember 16, 2020No Comments3 Mins Read
Back Anatomy - How to Use Science to Build Strong Back Muscles
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What is the anatomy of the back? Unfortunately, very few people pay attention to anatomy when deciding on their workout program or exercises to build a particular part. However, I think it is essential to understand anatomy and determine your workout accordingly.

When it comes to your back, understand your back’s anatomy to learn and understand your back muscles. Once you do so, you will notice that your workout routine is more effective. Finally, considering this, we will explain the anatomy of the back here.

The muscles of the back

The back has the most massive muscles in the entire body, and it plays a significant role in how the whole-body functions. For example, your back helps in the activity of the lower limb, upper limb, pelvis, and spine. There are three main muscles in the back, divided into two groups; extrinsic and intrinsic. These are:

1. Extrinsic Back Anatomy:

These are associated with the upper limb but are present in the posterior aspect of the trunk. It includes a superficial and intermediate layer.

Superficial Layer:

Superficial muscles help with the movement of the shoulders. They are present underneath the skin and attached to the shoulders’ bones. Muscles it includes are:

  • The trapezius is a large triangular muscle that originates from the occipital protuberance, skull, and ligamentum nuchae. Also, it has three parts; superior, middle, and inferior.
  • Latissimus Dorsi: Originating from the lower part of the back, it is the most significant muscle.
  • Rhomboids: It consists of both major and minor rhomboid muscles. Rhomboid minor originates from spinous C7-T1 vertebrae. Whereas rhomboid major originates from spinous T2-T5 vertebrae
  • Levator Scapula: Last muscle in this group is the levator scapulae, a small strap-like muscle. Subsequently, it helps to elevate the scapula.

Intermediate Layer:

Next is the intermediate layer in the outside muscle group. It helps with the thoracic cage’s movement, and its muscles run from the vertebral column to the rib cage. Also, this layer contains two main muscles, which are:

  • Serratus Posterior Superior: It is a thin rectangle-like muscle that presents deep in the rhomboid muscles. Originating from the lower part of the nuchal ligament and cervical and thoracic spine, it helps elevate ribs from 2 to 5.
  • Serratus Posterior Inferior: It is deep in the latissimus dorsi and originates from the thoracic and lumbar spine. Also, it helps to depress ribs from 9-12.

2. Intrinsic Back Anatomy:

Intrinsic muscles develop embryologically in the back, including a deep layer.

Deep Layer:

It helps with the movement of the vertebral column. Deep muscles contain three layers: superficial, intermediate, and deep.

Superficial: Contains muscles known as spinotransversales. They help with the movement of the head and neck. Includes:

  • Splenius capitis
  • Splenius cervicis.

Intermediate: It contains three muscles known as erector spinae and is present between the vertebral spinous and the ribs’ costal angle.

  • Spinalis
  • Iliocostalis
  • Longissimus

Deep: The last layer is the deep intrinsic muscles underneath the erector spinae called transversospinalis.

  • Semipinalis
  • Multifidus
  • Rotatores

Consequently, deciding the best exercises and workouts for your back would be accessible once you clearly understand the back’s anatomy. If you or someone you know is considering bodybuilding, share this article on Facebook or Twitter so that others can learn more about building muscle.

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Terry Clark, M.S. is a math professor, certified fitness trainer, nutritionist, bodybuilding coach, writer, and fitness enthusiast. Terry loves working out, math, music, chess, cooking, writing, and teaching.

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