Cervical spinal nerve 6: Information from Answers.com

The cervical spinal nerve 6 (C6) is a spinal nerve of the cervical segment.^[1].

It originates from the spinal column from above the cervical vertebra 6 (C6).

The C6 nerve root shares a common branch from C5, and has a role in innervating many muscles of the rotator cuff and distal arm^[2], including:

Subclavius
Supraspinatus
Infraspinatus
Biceps Brachii
Brachialis
Deltoid
Teres Minor
Brachioradialis
Serratus Anterior
Subscapularis
Pectoralis Major
Coracobrachialis
Teres Major
Supinator
Extensor Carpi Radialis Brevis
Extensor Carpi Radialis Longus
Latissimus Dorsi

Damage to this area, by way of impingement from tumors, trauma, or hereditary degeneration of nerve tissue can cause deinnervation of one or more of the branched muscles, causing later atrophy, and subsequent tendinitis.

References

^ American Medical Association Nervous System -- Groups of Nerves
^ E-Hand, Electronic Textbook of Hand Surgery

v • d • e Nerves: spinal nerves

Cervical (8)	C1, C2, C3, C4, C5, C6, C7, C8 anterior (Cervical plexus, Brachial plexus) - posterior (Posterior branches of cervical nerves, Suboccipital - C1, Greater occipital - C2, Third occipital - C3)

Thoracic (12)	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 anterior (Intercostal, Intercostobrachial - T2, Thoraco-abdominal nerves - T7-T11, Subcostal - T12) - posterior (Posterior branches of thoracic nerves)

Lumbar (5)	L1, L2, L3, L4, L5 anterior (Lumbar plexus, Lumbosacral trunk) · posterior (Posterior branches of the lumbar nerves, Superior cluneal L1-L3)

Sacral (5)	S1, S2, S3, S4, S5 anterior (Sacral plexus) · posterior (Posterior branches of sacral nerves, Medial cluneal nerves)

Coccygeal (1)	anterior (Coccygeal plexus) · posterior (Posterior branch of coccygeal nerve)

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