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Segemental Innervation of the Upper Limbs

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
Nerve
Nerve Root
Origin (Brachial Plexus)
Rhomboids   Dorsal Scapular   C5   Rami  
🗑
Supraspinatus   Suprascapular   C5,6   Superior trunk  
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Infraspinatus   Suprascapular   C5,6   Superior trunk  
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Teres Minor   Axillary   C5,6   Posterior Cord (Terminal branch)  
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Deltoid   Axillary   C5,6   Posterior Cord (Terminal branch)  
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Subclavius   Subclavius   C5,6   Superior Trunk  
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Subscapularis   Upper & Lower Subscapular   C5,6   Posterior Cord  
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Teres Major   Lower Subscapular   C5,6   Posterior Cord  
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Pectoralis Major (clavicular head)   Lateral Pectoral   C5,6   Lateral Cord  
🗑
Pectoralis Major (sternal head)   Medial Pectoral   C7,8; T1   Medial Cord  
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Pectoralis Minor   Medial Pectoral   C7,8; T1   Medial Cord  
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Serratus Anterior   Long Thoracic   C5,6,7   Rami  
🗑
Latissimus Dorsi   Thoracodorsal   C6,7,8   Posterior Cord  
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Biceps Brachii   Musculocutaneous   C5,6   Lateral Cord (Terminal branch)  
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Brachialis   Musculocutaneous   C5,6   Lateral Cord (Terminal branch)  
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Brachioradialis   Radial   C5,6   Posterior Cord (Terminal branch)  
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Supinator   Radial   C5,6   Posterior Cord (Terminal branch)  
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Coracobrachialis   Musculocutaneous   C6,7   Lateral Cord (Terminal branch)  
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Extensor Carpi Radialis Longus   Radial   C6,7   Posterior Cord (Terminal branch)  
🗑
Pronator Teres   Median   C6,7   Lateral Cord (Terminal branch)  
🗑
Flexor Carpi Radialis   Median   C6,7   Lateral Cord (Terminal branch)  
🗑
Extensor Carpi Radialis Brevis   Radial   C6,7,8   Posterior Cord (Terminal branch)  
🗑
Anconeus   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Triceps Brachii   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Digitorum   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Digiti Minimi   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Indicis   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Carpi Ulnaris   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Abductor Pollicis Longus   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Pollicis Brevis   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Extensor Pollicis Longus   Radial   C7,8   Posterior Cord (Terminal branch)  
🗑
Flexor Carpi Ulnaris   Ulnar   C7,8   Medial Cord (Terminal branch)  
🗑
Flexor Digitorum Superficialis   Median   C7,8; T1   Lateral Cord (Terminal branch)  
🗑
Flexor Digitorum Profundus   Median & Ulnar   C7,8; T1   Lateral & Medial Cords (Terminal branch)  
🗑
Flexor Pollicis Longus   Median   C8; T1   Lateral Cord (Terminal branch)  
🗑
Pronator Quadratus   Median   C8,T1   Lateral Cord (Terminal branch)  
🗑
Abductor Pollicis Brevis   Median   C8; T1   Lateral Cord (Terminal branch)  
🗑
Flexor Pollicis Brevis   Median   C8; T1   Lateral Cord (Terminal branch)  
🗑
Opponens Pollicis   Median   C8; T1   Lateral Cord (Terminal branch)  
🗑
Adductor Pollicis   Ulnar   C8; T1   Medial Cord (Terminal branch)  
🗑
Adductor Digiti Minimi   Ulnar   C8; T1   Medial Cord (Terminal branch)  
🗑
Flexor Digiti Minimi   Ulnar   C8; T1   Medial Cord (Terminal branch)  
🗑
Opponens Digiti Minimi   Ulnar   C8: T1   Medial Cord (Terminal branch)  
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Lumbrical I, II   Median   C8; T1   Lateral Cord (Terminal branch)  
🗑
Lumbricals III, IV   Ulnar   C8; T1   Medial Cord (Terminal branch)  
🗑
Interossei   Ulnar   C8; T1   Medial Cord (Terminal branch)  
🗑


   

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