Subclavian nerve
| Subclavian nerve | |
|---|---|
 Diagram of the right brachial plexus. Subclavian nerve labelled at top right. | |
| Error creating thumbnail: 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 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of neuroanatomy [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
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.
Anatomy
[edit | edit source]Origin
[edit | edit source]The 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
[edit | edit source]Descending, it passes anterior to (the 3rd part of) the subclavian artery and vein.[2]
Variation
[edit | edit source]Accessory phrenic nerve
[edit | edit source]The 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
[edit | edit source]The subclavian nerve innervates the subclavius muscle.[6]
Additional images
[edit | edit source]-
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).
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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
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