Subclavian nerve

Subclavian nerve
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

The subclavian nerve, also known as the nerve to the subclavius, is small branch of the upper trunk of the brachial plexus. It contains axons from C5 and C6. The subclavian nerve innervates the subclavius muscle.

Structure

The subclavian nerve is a branch of the upper trunk of the brachial plexus.[1] It contains axons derived from the ventral rami of the C5 and C6 cervical spinal nerves.[1]

Variation

The subclavian nerve can variably give rise to a branch which innervates the diaphragm called the accessory phrenic nerve.[2] The accessory phrenic nerve may rather branch from the C4 or C6 segments or ansa cervicalis.[3] This nerve usually joins with the phrenic nerve before innervating the diaphragm, ventral to the subclavian vein.[4]

Function

The subclavian nerve innervates the subclavius muscle.[5]

Additional images

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

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.
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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[:0-1] 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.

[2] 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.

[3] 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

[4] 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.

[5] 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)