Get Acquainted With The Anatomy Of The Back Muscles

It is important to know the anatomy of the back muscles as they are so important to the human body. Some help with the posture, while others are responsible for the back movements. In today’s article we will tell you everything you need to know.
Familiarize yourself with the anatomy of the back muscles

The anatomy of the back muscles is interesting, especially when it comes to the muscles that are located at the back of the body between the shoulders. In this article we will take a look at some of the most important muscles in the back and what they do.

The back

All in all, we can divide the back into two regions :

  1. Chest area: This is the upper back that connects the arms and organs of the chest, such as the lungs and heart.
  2. The area of ​​the lumbar spine : This is the lower part of the spine, below the chest, which is linked to the spine and the organs of the abdomen, such as the liver and intestines.

The anatomy of the back muscles basically defines the function in relation to where they are located in the human body and the other structures to which they are attached.

These muscles determine posture and regulate the three basic movements of the upper body: bending, rotation and extension. They are a common area to examine in occupational medicine due to common occupational injuries.

We will not describe all the back muscles in this article, but we will give you an overview of the most relevant ones. We will therefore divide them into three regions, according to their depth. So let’s see what the deep, intermediate and superficial muscles are all about!

Anatomy of the back muscles: The deeper plane

These are the muscles that are furthest from the surface, closer to the internal organs and the spine. As a general group, they extend from the neck to the sacrum, and have a basic and fundamental function: to control the posture of the body.

Let’s look at some:

  • Around the spine : These lie down along the entire spine, between the spines and the transverse spines of the spine. Scientific studies in recent years have discovered how poor working postures affect them negatively. There are two types:
    • The ligament in the spine binds the spines to different spines; it is a back stretcher. 
    • The ligament that lies transversely does the same with the transverse tags; they are responsible for lateral movements. 
  • Pelvic ligaments: These connect the pelvis to the spine and reach some pelvic vertebrae. They can stretch the spine and also play a very important role in tilting the upper body to the side.
  • The rear saw muscles : These come in two variants: the upper rear saw muscle, and the lower rear saw muscle. They participate in respiratory dynamics and help the chest with inhaling and exhaling. They begin at the spine and extend into the ribs.

The intermediate back muscles

The anatomy of the back muscles is complex.
The deep muscles help the spine to hold the position.

We can summarize the function of this muscle group as those that regulate the movement of the shoulder blades. They are therefore directly attached to the shoulder blade. This bone pseudo-articulates with the ribs, so some refer to it as a “false joint” because it is not built up like other joints. It is instead a bone surface on the muscles.

Here you can find two interesting muscles:

  • Shoulder Lift : This muscle lifts the shoulder blades and can also be classified as a muscle group in the upper limbs due to the purpose it serves. It goes from the shoulder blade and to the cervical vertebra.
  • The gluteal muscles : When this muscle contracts, it contracts from the shoulder blade to the spine with an adduction movement. It communicates with the shoulder blade through the spine. The name comes from the diamond shape it has.

Anatomy of the back muscles: The superficial muscles

They are best known as they are associated with bodybuilding and aesthetics. Good development of these back muscles generates a characteristic figure for those who exercise regularly.

However, they are more important than their aesthetic function. The superficial muscles are actively involved in the movements of the shoulder joint.

The anatomy of the back muscles is not just for aesthetics.
The anatomy of the superficial muscles of the back does not only have an aesthetic function.

These are the two most relevant:

  • The trapezius muscles : This is one of the largest muscles and has three parts that are connected together. It connects to the occipital bone, cervical vertebra, collarbone, vertebrae and shoulder blade. They have several features:
    • Shoulder abduction
    • Advancement of the shoulder blade to the spine
    • The descent of the shoulder blade
  • The broad back muscles: These begin their journey in the lower vertebrae and in the part of the body that forms the last three ribs. They are thin, practically flat, and triangular in shape. When the arm acts as a fixed point, they lift the upper body.

We hope you enjoyed learning a little more about your body and your muscles!

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