Spinal nerve root
C6
Muscle contributions
Reported motor contributions, grouped by region. Muscles commonly receive more than one root; these groups are not a serial nerve pathway.
Neck
- Longus colli
- Anterior scalene
- Middle scalene
- Posterior scalene
Shoulder and scapula
- Serratus anterior
- Subclavius
- Supraspinatus
- Infraspinatus
- Subscapularis
- Deltoid
- Teres minor
- Teres major
- Latissimus dorsi
- Pectoralis major — clavicular part
Arm
- Biceps brachii
- Brachialis
- Coracobrachialis
- Triceps brachii
Forearm
- Brachioradialis
- Supinator
- Extensor carpi radialis longus
- Flexor carpi radialis
- Pronator teres
Source-dependent contributions
- Extensor carpi radialis brevis and anconeus — some references include C6; the UW baseline begins at C7.
Other deep posterior neck muscles have segmental posterior-ramus supply; the reviewed references do not resolve every muscle or fascicle to an individual root.