The subclavian nerve, also known as the nerve to the subclavius, is a small branch of the upper trunk of the brachial plexus. It contains axons from C5 and C6. It innervates the subclavius muscle.
| Subclavian nerve | |
|---|---|
 Diagram of the right brachial plexus. Subclavian nerve labelled at top right. | |
 The right brachial plexus with its short branches, viewed from in front. Subclavian nerve not visible. | |
| Details | |
| From | Upper trunk (C5-C6) of brachial plexus |
| To | Sometimes the accessory phrenic nerve |
| Innervates | Subclavius muscle |
| Identifiers | |
| Latin | nervus subclavius |
| TA98 | A14.2.03.013 |
| TA2 | 6412 |
| FMA | 65280 |
| Anatomical terms of neuroanatomy | |
Anatomy
editOrigin
editThe subclavian nerve is a branch of the upper trunk of the brachial plexus. It contains axons derived from the ventral rami of the C5 and C6 cervical spinal nerves.[1]
The origin is situated within the posterior triangle of the neck.[2]
Course
editDescending, it passes anterior to (the 3rd part of) the subclavian artery and vein.[2]
Variation
editAccessory phrenic nerve
editThe subclavian nerve may issue a branch called the accessory phrenic nerve[3][2] which innervates the diaphragm.[3] The accessory phrenic nerve may rather branch from the C4 or C6 segments or ansa cervicalis.[4] This nerve usually joins with the phrenic nerve before innervating the diaphragm, ventral to the subclavian vein.[5]
Function
editThe subclavian nerve innervates the subclavius muscle.[6]
Additional images
edit-
Diagram of the brachial plexus. The subclavian nerve can be seen branching from where C5 and C6 join to form the upper trunk. (Label at top right). -
The right brachial plexus. The subclavian nerve is not visible, but the muscle it innervates called the subclavius can be seen underneath the clavicle.
References
edit- ^ Rubin, Michael (28 September 2016). Netter's concise neuroanatomy. Netter, Frank H. (Frank Henry), 1906-1991 (Updated ed.). Philadelphia, PA. p. 310. ISBN 978-0-323-48091-8. OCLC 946698976.
{{cite book}}: CS1 maint: location missing publisher (link) - ^ a b c Kadasne, D. K. (2009). Kadasne's Textbook of Anatomy (1st ed.). New Delhi: Jaypee Brothers Medical Publishers. ISBN 978-81-8448-455-7. OCLC 682534511.
- ^ a b Loukas, Marios; Kinsella, Christopher R.; Louis, Robert G.; Gandhi, Sagar; Curry, Brian (November 2006). "Surgical anatomy of the accessory phrenic nerve". The Annals of Thoracic Surgery. 82 (5): 1870–1875. doi:10.1016/j.athoracsur.2006.05.098. ISSN 1552-6259. PMID 17062263.
- ^ Kayalioglu, Gulgun (2009-01-01), "Chapter 4 - The Spinal Nerves", in Watson, Charles; Paxinos, George; Kayalioglu, Gulgun (eds.), The Spinal Cord, San Diego: Academic Press, pp. 37–56, ISBN 978-0-12-374247-6, retrieved 2022-06-14
- ^ Sharma, Manish S.; Loukas, Marios; Spinner, Robert J. (2011). "Accessory phrenic nerve: A rarely discussed common variation with clinical implications". Clinical Anatomy. 24 (5): 671–673. doi:10.1002/ca.21142. PMID 21374726. S2CID 20001098.
- ^ Drake, Richard L. (2005). Gray's anatomy for students. Wayne Vogl, Adam W. M. Mitchell, Henry Gray. Philadelphia: Elsevier / Churchill Livingstone. p. 645. ISBN 0-443-06612-4. OCLC 55139039.
{{cite book}}: CS1 maint: date and year (link)
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