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MUSCLES OF THE UPPER EXTREMITY. 



Anterior humeral region. 

 Coraco-brachialis, 

 Biceps, 

 Brachialis anticus. 



Anterior brachial region. 



Superficial layer. 

 Pronator radii teres, 

 Flexor carpi radialis, 

 Palmaris longus, 

 Flexor sublimis digitorum, 

 Flexor carpi ulnaris. 



Deep layer. 



Flexor profundus digitorum, 

 Flexor longus pollicis, 

 Pronator quadratus. 



Posterior humeral region. 

 Triceps. 



Posterior brachial region. 



Superficial layer. 

 Supinator longus, 

 Extensor carpi radialis longior, 

 Extensor carpi radialis brevior, 

 Extensor communis digitorum, 

 Extensor minimi digiti, 

 Extensor carpi ulnaris, 

 Anconeus. 



Deep layer. 

 Supinator brevis, 

 Extensor ossis metacarpi pollicis, 

 Extensor primi internodii pollicis, 

 Extensor secundi internodii pol- 

 licis, 

 Extensor indicis. 



HAND. 



Radial region. Ulnar region. 



Abductor pollicis, Palmaris brevis, 



Flexor ossis metacarpi (opponens), Abductor minimi digiti, 

 Flexor brevis pollicis, Flexor brevis minimi digiti, 



Adductor pollicis. Adductor minimi digiti. 



Palmar region. 

 Lumbricales, 

 . Interossei palmares, 

 Interossei dorsales. 



Anterior thoracic region. 

 Pectoralis major, 

 Pectoralis minor, 

 Subclavius. 



Dissection. Make an incision along the line of the clavicle, from 

 the upper part of the sternum to the acromion process ; a second 

 along the lower border of the great pectoral muscle, from the lower 

 end of the sternum to the insertion of its tendon into the humerus ; 

 and connect the two by a third, carried longitudinally along the 

 middle of the sternum. The integument and superficial fascia are 

 to be dissected together from off the fibres of the muscle, and always 



