THE PERIPHERAL NERVOUS SYSTEM. 391 
Maas: 
Fic, 161.—NERVES AND ARTERIES OF THE FOREARM, SEEN FROM THE 
FLEXOR SIDE. 
Mm. palmaris longus, flexor carpi radialis, flexor carpi ulnaris, and the third 
and fourth heads of M. flexor profundus digitorum have been removed; also part of 
the pronator teres. 1, M. biceps; 2, conjoined tendon of M. brachialis and M. 
clavobrachialis; 3, short portion of caput mediale of M. triceps; 4, intermediate 
portion of caput mediale of M. triceps brachii; 5, cut ends of M. pronator teres; 
6, M. brachioradialis; 7, M. extensor carpi radialis longus and brevis; 8, fifth head 
of M. flexor profundus digitorum; 9, second head of M. flexor profundus digitorum; 
10, radial part of M. flexor sublimis digitorum; I1, common tendon of M. flexor 
profundus digitorum; 12, first head of M. flexor profundus digitorum; 13, cut origin 
of M. flexor carpi ulnaris. ¢@, ulnar nerve: 4, median nerve; c, dorsal cutaneous 
branch of the ulnar nerve; @, palmar branch of ulnar nerve; e, deep palmar 
branch; /, superficial pa mar branch; g’, A. brachialis; g, A. radialis; 4, A. collate- 
ralis ulnaris superior; 7,’A. radialis recurrens; 7, A. ulnaris recurrens; 4, A. ulnaris; 
2, A. interossea anteiior; 7, large branch of A. radialis, joining A. ulnaris. 
