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UE Muscles

Muscles of the Shoulder, Elbow, Wrist & Hand

MuscleActionsNerve SupplySpinal Segment
Brachialis Elbow flexion Musculocutaneous C5, C6, C7
Brachioradialis Elbow flexion Radial C5, C6, C7
Coracobrachialis Shoulder flexion Musculocutaneous C5, C6, C7 (lateral cord)
Deltoid Abduction Axillary C5, C6 (posterior cord)
Deltoid (anterior fibers) Shoulder flexion/horizontal adduction/internal rotation Axillary C5, C6 (posterior cord)
Deltoid (posterior fibers) Extension/horizontal abduction/external rotation Axiallry C5, C6 (posterior cord)
Flexor Carpi Radialis Pronation/wrist flexion/radial deviation Median C6, C7
Flexor Carpi Ulnaris Elbow flexion/wrist flexion & ulnar deviation Ulnar C7, C8
Infraspinatus Horizontal abduction/abduction/external rotation Suprascapular C5, C6
Latissimus Dorsi Shoulder extension/adduction/internal rotation & Scapular depression/protraction Thoracodorsal C6, C7, C8 (posterior cord)
Levator Scapulae Elevation of scapula/scapular downward rotation Dorsal Scapular C3, C4
Pectoralis Major Shoulder horizontal adduction/adduction/internal rotation & Scapular depression/protraction Lateral pectoral C5, C6 (lateral cord)
Pectoralis Major (Clavicular fibers) Forward flexion Lateral pectoral C5, C6 (lateral cord)
Pectoralis Major (Sternocostal fibers) Extension Lateral pectoral & Medial pectoral C5, C6 (lateral cord), C8, T1 (medial cord)
Pectoralis Minor Scapular depression/protraction/downward rotation Medial pectoral C8, T1 (medial cord)
Pronator Quadratus Pronation Median (Anterior interossei) C8, T1
Pronator Teres Elbow flexion/pronation Median C6, C7
Rhomboid Major Elevation, retraction and downward rotation of scapula Dorsal Scapular C4, C5
Rhomboid Minor Elevation, retraction, and downward rotation of the scapula Dorsal Scapular C4, C5
Serratus Anterior Depression, upward rotation, protraction of the scapula Long Thoracic C5, C6, C7
Subscapularis Abduction/adduction & internal rotation when are is at the side Subscapular C5, C6 (posterior cord)
Supinator Supination Radial C5, C6
Supraspinatus Abduction Suprascapular C5, C6
Teres Major Extension/horizontal abduction/adduction/internal rotation Subscapular C5, C6 (posterior cord)
Teres Minor Extension/horizontal abduction/adduction/external rotation Axillary C5, C6 (posterior cord)
Trapezius Retraction/elevation/depression/upward rotation of the scapula Accessory Cranial Nerve XI, C3, C4
Triceps Elbow extension Radial C6, C7, C8
Triceps (long head) Extension Radial C5, C6, C7, C8, T1 (posterior cord)
Extensor Carpi Radialis Longus Wrist extension/radial deviation Radial C6, C7
Extensor Carpi Radialis Brevis Wrist extension Radial (Posterior interosseus) C7, C8
Extensor Carpi Ulnaris Wrist extension/ulnar deviation Radial (Posterior interosseus) C7, C8
Abductor Pollicis Longus Wrist radial deviation/thumb radial abduction Radial (Posterior interosseus) C7, C8
Extensor Pollicis Longus Thumb extension/retroposition Radial (Posterior interosseus) C7, C8
Extensor Pollicis Brevis Wrist radial deviation/thumb radial abduction/extension/retropulsion Radial (Posterior interosseus) C7, C8
Extensor Digitorum Finger extension Radial (Posterior interosseus) C7, C8
Extensor Indicis Index finger extension Radial (Posterior interosseus) C7, C8
Extensor Digiti Minimi Fifth finger extension Radial (Posterior interosseus) C7, C8
Flexor Digitorum Profundus Finger flexion Median (Anterior interosseus) C8, T1
Flexor Digitorum Superficialis Finger flexion Median C8, T1
Lumbricals Finger flexion 1st & 2nd Median, 3rd & 4th Ulnar C8, T1
Dorsal Interossei Finger flexion/abduction Ulnar C8, T1
Flexor Digiti Minimi Fifth finger flexion Ulnar C8, T1
Palmar Interossei Finger flexion/adduction Ulnar C8, T1
Abductor Digiti Minimi Fifth finger abduction Ulnar C8, T1
Abductor Pollicis Brevis Thumb palmar abduction/opposition Median C8, T1
Flexor Pollicis Brevis Thumb flexion/opposition Median (superficial head) & Ulnar (deep head) C8, T1
Flexor Pollicis Longus Thumb flexion Median (Anterior Interosseus) C8, T1
Opponens Pollicis Thumb flexion/opposition Median C8, T1
Adductor Pollicis Thumb palmar & radial deviation Ulnar C8, T1
Opponens Digiti Minimi Fifth finger opposition Ulnar C8, T1
Anconeous Elbow extension Radial C7, C8, T1
Biceps Brachii Elbow flexion/supination, shoulder flexion Musculocutaneous C5, C6, C7 (lateral cord)
Created by: jvlassov