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Muscles of the Shoulder, Elbow, Wrist & Hand

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