Anatomy - Branches Of The Brachial Plexus

Front 1

Musculocutaneous

Back 1

Musclular Branches: Flexor Muscles in anterior arm (biceps brachii, brachialis, coracobrachialis)

Cutaneous Branches: Skin on anterolateral forearm (extremely variable)

Front 2

Median

Back 2

Muscular Branches: Flexor group of anterior forearm (palmaris longus, flexor carpi radialis, flexor digitorum superficialisk, flexor pollicis longus, lateral half of flexor digitorum profundus, and pronator muscles); intrinsic muscles of lateral palm and digital branches to the fingers.

Cutaneous Branches: Skin of lateral 2/3 of hand, palm side and dorsum of fingers 2 & 3

Front 3

Ulnar

Back 3

Muscular Branches: Flexor muscles in anterior froearm (flexor carpi ulnaris and medial half of flexor digitorum profundus); most intrinsic muscles of hand.

Cutaneous Branches: Skin of medial third of hand, both anterior and posterior aspects.

Front 4

Radial

Back 4

Muscular Branches: Posterior muscles of arm, forearm, and hand (triceps brachii, anconeus, supinator, brachioradials, extensors carpi radialis longus and brevis extensor carpi ulnaris) and several muscles of the fingers

Cutaneous Branches: Skin of posterolateral surface of entire limb (except dorsum of fingers 2 & 3)

Front 5

Axillary

Back 5

Muscular Branches: Deltoid and teres minor muscles

Cutaneous Branches: Some skin of shoulder Region

Front 6

Dorsal Scapular

Back 6

Rhomboid Muscles and Levator Scapulae

Front 7

Long Thoracic

Back 7

Serratus Anterior Muscle

Front 8

Subscapular

Back 8

Teres Major and Subscapular Muscles

Front 9

Suprascapular

Back 9

Shoulder joint; supraspinatus and infraspinatus muscles

Front 10

Pectoral (Lateral and Medial)

Back 10

Pectoralis Major and Minor Muscles