Back Muscles: Difference between revisions

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# The deep/intrinsic back muscles, are also called true back muscles. They are located deep to the extrinsic muscles, being separated from them by the thoracolumbar fascia<ref name=":1">Ken Hub [https://www.kenhub.com/en/library/anatomy/overview-of-back-muscles Over view of Back Muscles] Available: https://www.kenhub.com/en/library/anatomy/overview-of-back-muscles<nowiki/>(accessed 24.1.2022)</ref>.
# The deep/intrinsic back muscles, are also called true back muscles. They are located deep to the extrinsic muscles, being separated from them by the thoracolumbar fascia<ref name=":1">Ken Hub [https://www.kenhub.com/en/library/anatomy/overview-of-back-muscles Over view of Back Muscles] Available: https://www.kenhub.com/en/library/anatomy/overview-of-back-muscles<nowiki/>(accessed 24.1.2022)</ref>.


== Sub Heading 2 ==
== Superficial Group ==
[[File:Muscles around scapula.jpeg|thumb|250x250px|A Trapezius D Latissimus Dorsi E Levator Scapulae F Rhomboid Major]]
[[File:Muscles around scapula.jpeg|thumb|250x250px|A Trapezius D Latissimus Dorsi E Levator Scapulae F Rhomboid Major]]
The first category is the superficial, or extrinsic, back muscles. These muscles are located posteriorly on the back, but they assist in the movement of the limbs. The superficial muscles include<ref name=":0" />:
The first category is the superficial back muscles. These muscles are located posteriorly on the back, but they assist in the movement of the limbs. The superficial muscles include<ref name=":0" />:


* Trapezius
* Trapezius

Revision as of 01:55, 24 January 2022

Original Editor - Lucinda hampton

Top Contributors - Lucinda hampton and Kim Jackson  

Introduction[edit | edit source]

There are three major groups of back muscles:

  1. Superficial: attached to the shoulder girdle
  2. Intermediate: attached to the posterior thorax
  3. Deep: attached to the vertebral column, also known as the intrinsic muscle group[1]

These groups serve to allow: flexion/extension, rotation, and side bending of the back; movement of the limbs; locomotor function; and assistance in the respiratory effort[2].

Generalized back pain is a common presenting symptom for patients. The underlying etiology of the pain commonly traces to a strain of the skeletal muscle[2].

Additional terminology

  1. The superficial and intermediate muscle groups (or extrinsic muscles) are also called immigrant muscles, since they actually represent muscles of the upper limb that have migrated to the back during fetal development.
  2. The deep/intrinsic back muscles, are also called true back muscles. They are located deep to the extrinsic muscles, being separated from them by the thoracolumbar fascia[3].

Superficial Group[edit | edit source]

A Trapezius D Latissimus Dorsi E Levator Scapulae F Rhomboid Major

The first category is the superficial back muscles. These muscles are located posteriorly on the back, but they assist in the movement of the limbs. The superficial muscles include[2]:

  • Trapezius
  • Latissimus dorsi
  • Levator scapulae
  • Rhomboids

Intermediate Muscles[edit | edit source]

Serratus posterior inferior

The intermediate group contains two muscles:

These muscles run from the vertebral column to the ribcage, and assist with elevating and depressing the ribs. They are thought to have a slight respiratory function[4].

Deep/Intrinsic Muscles[edit | edit source]

Erector spinae group
Transversospinales group and segmental muscles

These muscles are responsible for the motion of the axial skeleton. The main movements are flexion/extension, side bending, and rotation. This group further subdivides into several categories in the back and neck. The main muscle groups in the intrinsic muscle group are the erector spinae group and the transversospinalis group.

Resources[edit | edit source]

  • bulleted list
  • x

or

  1. numbered list
  2. x

References[edit | edit source]

  1. ↑ Geeky Medics back Muscles Available: https://geekymedics.com/superficial-back-muscles/(accessed 24.1.2022)
  2. ↑ 2.0 2.1 2.2 Modes RJ, Fahrioglu SL. Anatomy, Back. StatPearls [Internet]. 2021 Mar 27. Available:https://www.ncbi.nlm.nih.gov/books/NBK539746/ (accessed 24.1.2022)
  3. ↑ Ken Hub Over view of Back Muscles Available: https://www.kenhub.com/en/library/anatomy/overview-of-back-muscles(accessed 24.1.2022)
  4. ↑ teach me anatomy The intermediate back Muscles Available:https://teachmeanatomy.info/back/muscles/intermediate/ (accessed 24,1,2022)
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