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Lower subscapular nerve

FieldValue
NameLower subscapular nerve
Latinnervus subscapularis inferior
ImageGray807.png
CaptionDiagram of brachial plexus (label for lower subscapular nerve at bottom center)
InnervatesSubscapularis and teres major muscle
BranchFromPosterior cord

The lower subscapular nerve, also known as the inferior subscapular nerve, is the third branch of the posterior cord of the brachial plexus. It innervates the inferior portion of the subscapularis muscle and the teres major muscle.

Structure

The lower subscapular nerve contains axons from the ventral rami of the C5 and C6 cervical spinal nerves. It is the third branch of the posterior cord of the brachial plexus. It gives branches to 2 muscles:

  • subscapularis muscle. It usually gives 4 branches to innervate the subscapularis, and can give up to 8 branches.
  • teres major muscle.

Function

The lower subscapular nerve innervates the subscapularis muscle and the teres major muscle. These muscles medially rotate and adduct the humerus.

Additional images

File:Brachial plexus.svg|Brachial plexus File:Gray809.png|The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front. File:Brachial_plexus_color.svg|Brachial plexus with courses of spinal nerves shown

References

References

  1. Bustamante-Aliste, P. A. (February 2020). "Origen del Nervio Subescapular Inferior, Patrones de Ramificación y su Contribución a la Inervación del Músculo Subescapular". International Journal of Morphology.
  2. Rea, Paul. (2015-01-01). "Chapter 2 - Upper Limb Nerve Supply". Academic Press.
  3. Loftus, Brian D.. (2010-01-01). "CHAPTER 2 - Clinical Neuroanatomy". Mosby.
  4. Nicole Bentley, J.. (2015-01-01). "Chapter 42 - Anatomy of the Posterior Cord and Its Branches". Academic Press.
  5. Thomas, Jared. (2018-01-01). "5 - Overview". Elsevier.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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