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Branches from roots
- Dorsal scapular n.(C5): levator scapulae + rhomboids
- N. to subclavius (C5,6): subclavius
- Long thoracic n. (C5, 6, 7): serratus anterior
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Branch from upper trunk
Suprascapular n (C5, 6): supraspinatus + infraspinatus
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Branches from lateral cord (C5, 6, 7)
- Lateral pectoral n.: Deep surface of Pectoralis major
- Musculocutaneous n: Anterior arm
- Lateral head of median n: Anterior forearm
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Branches from medial cord (C8, T1)
- Medial pectoral n.: Pectoralis minor (passes between axillary artery and vein) and major
- Medial cutaneous n. of arm (T1): Sensory supply to skin of medial arm up to medial epicondyle
- Medial cutaneous n. of forearm (C8, T1): sensory supply to skin of lower part of arm and medial side of forearm
- Medial head of median n.: Anterior forearm
- Ulnar nerve: Medial aspect of arm, Intrinsic muscles of hand (apart from radial 2 lumbricals and thenar muscles)
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Branches from posterior cord (C5-T1)
- Upper subscapular n. (C6): upper part of subscapularis
- Thoracodorsal n. (C6,7,8): Latissimus dorsi
- Lower subscapular n. (C6,7): Lower part of subscapularis and teres major
- Axillary n. (C5, 6): Deltoid, Teres minor. Branches to shoulder joint, sensory supply to skin over lateral part of deltiod.
- Radial n.: Muscles of posterior arm and forearm
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