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upper extremities

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muscle
origin
insertion
innervation
action
Brachioradialis   lateral border of distal humerus   styloid of radius   radial nerve   flexes forearm & pronates/supinates the forearm  
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triceps brachii   LONG: Infragleniod tubercle LATERAL: Lateral Posterior surface Humerus MEDIAL: posterior surface humerus   olecranon of ulna   radial nerve   extends forearm at elbow & sholder  
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Anconeus   lateral epicondyle of humerus   olecranon & superior shaft of ulna   radial nerve   extends forearm at elbow (assist the triceps)  
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pronator teres   medial epicondyle of humerus 7 coronoid process of ulna   midlateral surface of radius   medial nerve   pronates forearm at radioulnar joint & weakly flexes forearm at elbow  
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pronator quadratus   distal shaft of the ulna   distal shaft of radius   medial nerve   pronates forearm at radioulnar joint  
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supinator (corkscrew or screwdriver   lateral epicondyle of humerus & the supinator crest   lateral & proximal 1/3 of radius   deep radial nerve   supinates forearm at radioulnar joint  
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Flexor carpi radialis   medial epicondyle of humerus   2nd 7 3rd metacarpals   medial nerve   flexes and abducts hand (radial deviation)  
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Palmaris longus (missing in 10% of population on left side)   medial epicondyle of humerus   flexor retinaculum and palmar aponeurosis   medial nerve   weak flexion of wrist  
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flexor carpi ulnaris   medial epicondyle & superior ulna   pisiform,hamate, & 5th metacarpal   medial nerve   flexes & adducts hand (ulna deviation)  
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flexor digitorum superficialis   mdial epicondyle, coronoid process of ulna & anterior oblique line of radius   middle phalanx of each finger   medial nerve   flexes the middle & proximal phalanx & wrist  
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flexor pollicis longus   anterior radius & interosseous membrane   base of the distal phalanx of thumb   median nerve   flexes thunb at IP joint  
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flexor digitorum profundus   anterior ulna   base of distal phalanx of each finger   median 7 ulnar nerves   flexes middle and distal phalanges of each finger at IP joints & proximal phalanges at MCP joint & hand at wrist  
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extensor carpi radialis longus   lateral supracondylar ridge   2nd metacarpal   radial nerve   extends &ABducts hand at wrist  
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extensor carpi radialis brevis   lateral epicondyle of humerus   3rd metacarpal   radial nerve   extends &ABducts hand at wrist  
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extensor digitorum   lateral epicondyle of humerus   middle & distal phalanges of each fingere   radial nerve   extends the phalanges at IP joint & at MCP joints & hand at wrist  
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extensor digiti minimi   lateral epicondyle of humerus   tendon of the extensor digitorum on 5th phalanx   deep radial nerve   extends the proximal phalange of little finger at MCP joint & the hand at the wrist  
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extensor carpi ulnaris   lateral epicondyle & posterior ulna   5th metacarpal   deep radial nerve   extends, adducts hand at wrist  
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ABductor pollicis longus   posterior & middle radius & ulna along w/the interosseous membrane   1st metacarpal   deep radial nerve   Abducts,extends thumb at cmc jt & ABducts hand at wrist  
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extensor pollicis brevis   posterior middle of RADIUS & interosseous membrane   PROXIMAL phalanx of thunb   deep radial nerve   extends thumb at CMC &MCP ,& hand at wrist  
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extensor pollicis longus   posterior middle of ULNA & interosseous membrane   DISTAL phalanx of thunb   deep radial nerve   extands thumb at IP & CMC joint & ABDUCTS hand at wrist  
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extensor Indicis   posterior ulna   tendon of extensor digitorum on index finger   deep radial nerve   extends the distal 7 middle phalanges of index finger at IP joints & proximal phalanx at MCP jt & hand at wrist  
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