EXTREMITIES. 37 



the eighth cervical pair to tlie ad(hictor muscle. 

 9. Nerve of the subscapularis Muscr.E. — Two 

 braiicly3s ramifying in that muscle, y^ ^-"^^^^^^^^^ 



0/Sus-scAPULAR nerve. — Formed ])y the sixth 

 and "seventh cervical pairs, running backwards between 

 tlie angnlaris scapulae, tlie sterno prescapularis and 

 the antea spinatus muscles, reaches the posterior fossa 

 of the external face of the scapula, where it termi- 

 nates in the postea spinatus muscle. 



11. Anterior brachial nerve or musculo-cutane- 

 ous. — Formed hy the seventh and eighth cervical pairs 

 — situated on the inside of the scapulo humeral joint, 

 crossing the axillary artery and passing underneath it, 

 united to the median nerve, runnino- in frpnt of it to 

 the bifurcation of the omo-brachialis muscle, passing 

 between its branches and (iippin^ into,-; the coraco- 

 radialis mnscle. = 'f^^^ ^x^^.^^'H^ 



12. Radial nerve. — Tlie largest of the plexus — 

 formed principally by the iirst dorsal pair. It passes 

 downwards and backwards, under and across the sub- 

 scapularis and adductor nmscles parallel to the hume- 

 ral artery and posterior to the cubital nerve. At the 

 deep humeral artery it passes behind the humerus, un- 

 der and then alongside the short flexor of the fore- 

 arm to the anterior face of the elbow joint and the 

 radius ; then under the extensors of the metacarpus 



