

Fig. 78. DISSECTION OF THE FOREARM, POSTERIOR. [This specimen presents the 

 clubbed " fingers typical of tubercular diathesis.] i, Brachialis anticus. 2, Supinator lon- 

 gus (brachioradialis). 3, Extensor carpi radialis longior. 4, The extensor ossis metacarpi 

 pollicis. 5, The anterior interosseous artery, having passed to the posterior of the forearm. 

 6, Radial nerve. 7, Tendon of the extensor carpi radialis longior. 8, Tendon of the exten- 

 sor carpi radialis brevior. 9, Tendon of the extensor brevis pollicis (extensor primi inter- 

 nodu pollicis). 10, Posterior radial carpal arterv. n, Dorsalis pollicis (which also gives off 

 the dorsalis indicis). 12, Communicating branch between the radial and the dorsal cutaneous 

 branch of the ulnar nerves. 13, Radial digital branches. 14, Extensor longus pollicis (exten- 

 sor secundi internodii pollicis). 15, The middle portion of a tendon of the extensor communis 

 digitorum. 16, The lateral portion of the same tendon. 17, Slip connecting the tendon of 

 the extensor communis digitorum of the ring finger with that of the middle. 18, Tendon of 

 the extensor minimi digiti. 19, Digital branches of the dorsal cutaneous nerve (posterior 

 carpal of ulnar). 20, Tendons of the extensor communis digitorum. 21, The posterior 

 annular ligament. 22, The extensor indicis. 23, Extensor carpi ulnaris. 24, The anconeus. 

 25, The olecranon process. 26, The external condyle of humerus. 27, Triceps. 



