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From Wikipedia, the free encyclopedia
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 | |
---|---|
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 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]
Descending, it passes anterior to (the 3rd part of) the subclavian artery and vein.[2]
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]
The subclavian nerve innervates the subclavius muscle.[6]