Muscles of the upper extremity
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Biceps brachii | musculocutaneous n. | flexes arm at elbow joint; MAIN SUPINATOR OF FOREARM (when elbow flexed); weak flexor of shoulder joint (long head) | brachial a.
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Coracobrachialis | musculocutaneous n. | flexes arm (at elbow joint); weak adductor of arm | brachial a.
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Brachialis | musculocutaneous n. | MAIN FLEXOR OF FOREARM (when elbow flexed); supinates forearm | brachial a.
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Triceps brachii | radial n. | extends forearm at elbow (MAIN EXTENSOR OF ELBOW) | profundi brachii a. (deep brachial a.)
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Pronator Teres | median n. | pronates and flexes forearm | "ulnar a., anterior ulnar recurrent a."
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Flexor Carpi Radialis | median n. | flexes and aBducts hand at wrist | ulnar a.
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Flexor Carpi Ulnaris | ulnar n. | flexes and adducts hand at wrist | muscular branches of ulnar a.
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Palmaris Longus (often absent) | median n. | flexes hand at wrist; tightens palmar aponeurosis | muscular branches of ulnar a.
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Flexor Digitorum Superficialis | median n. | flexes middle phalanx of 2-5 fingers and hand; flexes MCP and wrist joints | muscular branches of ulnar a.
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Pronator Quadratus | median n. | primary mover to PRONATE FOREARM | anterior interosseus a.
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Flexor Pollicis Longus | median n. | flexes distal phalanx of thumb | anterior interosseus a.
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Flexor Digitorum Profundus | medial half: ulnar n.; lateral half: median n. | flexes distal phalanx of 2-5 fingers; flexes MCP and wrist joints | muscular brances of ulnar a.; anterior interosseus a. (from ulnar a.)
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Brachioradialis | radial n. | flexes forearm at elbow (only one in posterior) | radial recurrent a.
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Extensor Carpi Radialis Longus | radial n. | extends and aBducts hand at wrist | radial a.
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Extensor Carpi Radialis Brevis | deep branch of radial n. | extends and aBducts hand at wrist | radial a.
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Extensor Digitorum | deep branch of radial n. | extends fingers and hand | interosseus recuurent a.
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Extensor Digiti Minimi | deep branch of radial n. | extends MCP & IP joints of little finger | interosseus recuurent a.
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Extensor Carpi Ulnaris | deep branch of radial n. | extends and adducts hand at wrist | ulnar a.
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Anconeus | radial n. | extends elbow (along with triceps brachii m.) | interosseus recuurent a.
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ABductor Pollicis Longus | deep branch of radial n. | aBducts and extends thumb | posterior interosseus a.
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Extensor Pollicis Longus | deep branch of radial n. | extends distal phalanx of thumb | posterior interosseus a.
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Extensor Pollicis Brevis | deep branch of radial n. | extends MCP joint of thumb | posterior interosseus a.
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Extensor Indicis | deep branch of radial n. | extends MCP joint of index finger | posterior interosseus a.
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Supinator | deep branch of radial n. | MAIN SUPINATOR OF FOREARM | interosseus recurrent a.
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ABductor Pollicis Brevis | (recurrent branch of) median n. | aBducts thumb | superficial palmar branches of radial a.
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Flexor Pollicis Brevis | (recurrent branch of) median n. | flexes MCP joint of thumb | superficial palmar branches of radial a.
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Opponens Pollicis | (recurrent branch of) median n. | pulls thumb medially & forward across palm | superficial palmar branches of radial a.
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ABductor Digiti Minimi | (deep branch of) ulnar n. | aBducts little finger | ulnar a.
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Flexor Digiti Minimi | (deep branch of) ulnar n. | flexes little finger at MCP joint | ulnar a.
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Opponens Digiti Minimi | (deep branch of) ulnar n. | brings 5th metacarpal bone towards thumb | ulnar a.
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Adductor Pollicis | (deep branch of) ulnar n. | adducts thumb | deep palmar arterial arch
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Lumbricals | lateral 2: median n.; medial 2: ulnar n. | flexes fingers at MCP joints; EXTENDS FINGERS AT IP JOINTS(with interossei) | superficial palmar arterial arch
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Dorsal Interossei mm. | (deep branch of) ulnar n. | aBducts fingers from 3rd finger | dorsal & palmar metacarpal a. (of deep palmar arch)
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Palmar Interossei mm. | (deep branch of) ulnar n. | adducts fingers toward 3rd finger | palmar metacarpal a. (of deep palmar arch)
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Palmaris Brevis | (superficial branch of) ulnar n. | improves palmar grip (by wrinkling skin and deepening hollow of palm); covers/protects ulnar n. and a. | ulnar a.
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Pectoral Major | medial and lateral pectoral ns. | adducts and medially rotates arm | pectoralis branch of thoracoacromial a.; lateral thoracic a. (lesser supply)
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Pectoral Minor | medial pectoral n. | pulls shoulder down and forward (protraction) | lateral thoracic a.
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Serratus Anterior | long thoracic n. | rotates scapula and pulls scapula around thoracic cage | lateral thoracic a.
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Subclavius | nerve to subclavius m. | anchors and depresses the clavicle | clavicular branch of thoracoacromial trunk
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