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MUSCLES OF POSTERIOR FOREARM

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ORIGIN OF ABDUCTOR POLLICIS LONGUS   POSTERIOR RADIUS, POSTERIOR ULNA, INTEROSSEOUS MEMBRANE  
INSERTION OF ABDUCTOR POLLICIS LONGUS   BASE OF 1ST METATARSAL  
ACTION OF ABDUCTOR POLLICIS LONGUS   ABDUCTION OF 1ST METACARPAL OF THUMB AT CM JOINT, ASSISTS WRIST ABDUCTION  
INNERVATION OF ABDUCTOR POLLICIS LONGUS   RADIAL NERVE  
ACTING ALONG, THIS MUSCLE ABDUCTS THE THUMB IN A RADIAL DIRECTION AND SOME SOURCES DESCRIBE THIS ACTION AS EXTENSION OF THE THUMB AT CM JOINT   ABDUCTOR POLLICIS LONGUS  
WITH CONTINUED ACTION, THIS MUSCLE CAN ABDUCT THE WRIST   ABDUCTOR POLLICIS LONGUS  
ORIGIN OF SUPINATOR   LATERAL EPICONDYLE OF HUMERUS, ANNULAR AND RADIAL COLLATERAL LIGAMENTS, PROXIMAL ULNA AT SUPINATOR CREST  
INSERTION OF SUPINATOR   LATERAL SURFACE OF PROXIMAL 1/3 OF RADIUS BETWEEN ANTERIOR AND POSTERIOR OBLIQUE LINES  
INNERVATION OF SUPINATOR   RADIAL NERVE  
ACTION OF SUPINATOR   SUPINATION OF FOREARM  
THIS NERVE PASSES BETWEEN THE SUPERFICIAL AND DEEP LAYERS OF THE SUPINATOR   RADIAL  
SLOW, NON-RESISTED SUPINATION AND FOR SUPINATION WITH THE ELBOW EXTENEDED   SUPINATOR  
SPEED AND RESISTANCE REQUIRED IN SUPINATION   BICEPS BRACHII REQUIRED  
ORIGIN OF EXTENSOR CARPI RADIALIS LONGUS   LATERAL SUPRACONDYLAR RIDGE, LATERAL EPICONDYLE OF HUMERUS  
INSERTION OF EXTENSOR CARPI RADIALLIS LONGUS   BASE OF 2ND METACARPAL  
ACTION OF EXTENSOR CARPI RADIALLIS LONGUS   EXTENSION, ABDUCTION OF WRIST (RADIAL DEVIATION)  
INNERVATION OF EXTENSOR CARPI RADIALLIS LONGUS   RADIAL NERVE  
ACTING ALONE, THIS MUSCLE EXTENDS THE WRIST IN A RADIAL DIRECTION   EXTENSOR CARPI RADIALIS LONGUS  
ORIGIN OF EXTENSOR CARPI RADIALIS BREVIS   LATERAL EPICONDYLE OF HUMERUS (COMMON EXTENSOR TENDON)  
INSERTION OF EXTENSOR CARPI RADIALIS BREVIS   BASE OF 3RD METACARPAL  
ACTION OF EXTENSOR CARPI RADIALIS BREVIS   EXTENSION OF WRIST  
INNERVATION OF EXTENSOR CARPI RADIALIS BREVIS   RADIAL NERVE  
ACTING ALONG, THIS MUSCLE EXTENDS THE WRIST IN THE MIDLINE   EXTENSOR CARPI RADIALIS BREVIS  
ORIGIN OF EXTENSOR CARPI ULNARIS   LATERAL EPICONDYLE OF HUMERUS (COMMON EXTENSOR TENDON), POSTERIOR PROXIMAL ULNA  
INSERTION OF EXTENSOR CARPI ULNARIS   BASE OF 5TH METACARPAL  
ACTION OF EXTENSOR CARPI ULNARIS   EXTENSION, ADDUCTION OF WRIST (ULNAR DEVIATION)  
INNERVATION OF EXTENSOR CARPI ULNARIS   RADIAL NERVE  
ACTING ALONE, THIS MUSCLE EXTENDS THE WRIST IN AN ULNAR DIRECTION   EXTENSOR CARPI ULNARIS  
THE TENDON OF THIS MUSCLE RUNS THROUGH A GROOVE BETWEEN THE HEAD OF THE ULNA AND THE STYLOID PROCESS OF THE ULNA   EXTENSOR CARPI ULNARIS  
ORIGIN OF EXTENSOR DIGITORUM   LATERAL EPICONDYLE OF HUMERUS (COMMON EXTENSOR TENDON)  
INSERTION OF EXTENSOR DIGITORUM   EXTENSOR EXPANSION OF 4 FINGERS  
ACTION OF EXTENSOR DIGITORUM   EXTENSION OF PROXIMAL PHALANGES OF 4 FINGERS AT MP JOINTS, ASSISTS EXTENSION OF WRIST  
INNERVATION OF EXTENSOR DIGITORUM   RADIAL NERVE  
THIS MUSCLE DIVIDES INTO THE FOUR PROMINENT TENDONS ON THE DORSUM OF THE HAND   EXTENSOR DIGITORUM  
CONTRACTION OF THIS MUSCLE CONTINUED PAST FINGER EXTENSION WILL RESULT IN EXTENSION OF THE WRIST   EXTENSOR DIGITORUM  
ORIGIN OF EXTENSOR DIGITI MINIMI   LATERAL EPICONDYLE OF HUMERUS (COMMON EXTENSOR TENDON)  
INSERTION OF EXTENSOR DIGITI MINIMI   EXTENSOR EXPANSION OF LITTLE FINGER  
ACTION OF EXTENSOR DIGITI MINIMI   EXTENSION OF PROXIMAL PHALANX OF LITTLE FINGER AT MP JOINT, ASSISTS EXTENSION OF WRIST  
INNERVATION OF EXTENSOR DIGITI MINIMI   RADIAL NERVE  
THIS MUSCLE JOINS THE EXTENSOR DIGITORUM TENDON IN THE EXTENSOR EXPANSION   EXTENSOR DIGITI MINIMI  
ORIGIN OF EXTENSOR INDICIS   POSTERIOR ULNA AND INTEROSSEOUS MEMBRANE  
INSERTION OF EXTENSOR INDICIS   EXTENSOR EXPANSION OF INDEX FINGER  
ACTION OF EXTENSOR INDICIS   EXTENSION OF PROXIMAL PHALANX OF INDEX FINGER AT MP JOINT, ASSISTS EXTENSION OF WRIST  
INNERVATION OF EXTENSOR INDICIS   RADIAL NERVE  
4 DEEP MUSCLES ORIGINATING ON POSTERIOR RADIUS, ULNA AND INTEROSSEOUS MEMBRANE FROM MOST PROXIMAL TO DISTAL IN ORIGIN   ABDUCTOR POLLICIS LONGUS, EXTENSOR POLLICIS BREVIS, EXTENSOR POLLICIS LONGUS, AND EXTENSOR INDICIS  
ORIGIN OF EXTENSOR POLLICIS LONGUS   POSTERIOR ULNA AND INTEROSSEOUS MEMBRANE-MIDDLE 1/3  
INSERTION OF EXTENSOR POLLICIS LONGUS   BASE OF DISTAL PHALANX OF THUMB  
ACTION OF EXTENSOR POLLICIS LONGUS   EXTENSION OF DISTAL PHALANX OF THUMB AT IP JOINT, ASSISTS WRIST ABDUCTION  
INNERVATION OF EXTENSOR POLLICIS LONGUS   RADIAL NERVE  
THIS MUSCLE FORMS THE MEDIAL BORDER OF THE ANATOMICAL SNUFFBOX   EXTENSOR POLLICIS LONGUS  
ORIGIN OF EXTENSOR POLLICIS BREVIS   POSTERIOR RADIUS, INTEROSSEOUS MEMBRANE  
INSERTION OF EXTENSOR POLLICIS BREVIS   BASE OF PROXIMAL PHALANX OF THUMB  
ACTION OF EXTENSOR POLLICIS BREVIS   EXTENSION OF PROXIMAL PHALANX OF THUMB AT MP JOINT, ASSISTS IN WRIST ABDUCTION  
THIS MUSCLE FORMS THE LATERAL BORDER OF THE ANATOMICAL SNUFF BOX   EXTENSOR POLLICIS BREVIS  
ANATOMICAL SNUFFBOX   DEPRESSION ON THE DORSUM OF THE 1ST METACARPAL, REPTEDLY USED TO HOLD SNUFF FOR SNIFFING BY GENTEEL PERSONS IN THE 1800'S  


   


 
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Created by: chengel