380 ANATOMICAL TECHNOLOGY. 



aside. The veins of tlie arm were wholly removed, the arteries and nerves carefully 

 traced with fine scissors, forceps and tracer. The animal was transected (§ 334) and the 

 cephalic half preserved in alcohol (§ 286). 



Explanation of Fig. 105. — A. carotidea — The right carotid artery (§937). A. spscp., 

 A. suprascapularis — The suprascapular artery ; the main branch of this artery accompa- 

 nies the N. suprascapularis, but in this figure only the smaller branch of the artery to the 

 trapezius muscle is shown ; see § 937. A. crcm., A. circumflexa — The circumflex artery 

 (§ 941). A. sbsc, A. subscapularis — The subscapular artery (§ 943). A. axl., A. axil- 

 laris — The axillary artery (§ 938). A. thor. (thoracica) longa — The long thoracic artery 

 (§ 940). A. thor. ant., A. thoracica anterior (§ 939). A. br., A. brachialis— The bra- 

 chial artery (§ 943). A. ulnaris — The ulnar artery (§ 945). A. interosseus — The inter- 

 osseous artery (§ 944, D). A. radialis — The radial artery (§ 946). Eminentia hypothenaris 

 — The hypothenar eminence. Fra. eptrch., Foramen epitrochleare ; see Fig. 46. 

 MM. pectorales — The cut end of the pectoral muscles (§ 640). M. crcd, M. coracoideus 

 (§ 668). M. biceps (§691). M. entrc, dv. cd., M. entotriceps, divisio caudalis (§ 685). 

 M. medtrc, M. meditriceps (§ 683). M. eptrch., M. epitrochlearis (§ 681). M. serra- 

 tus (magnus), (§ 664). M. scalenus. M. rectus thor. (thoracicus). N. vagus et sym. 

 (sympathicus), (Fig. 107). N. crv. (4), N. cervicalis (4). N. crv. (5), N. cervicalis 

 (5). N. crv. (6), N. cervicalis (6). N. spscp., N. suprascapularis — The suprascapular 

 nerve (§ 1030). N. phrn., N. phrenicus — The phrenic, diaphragmatic or internal respira- 

 tory nerve (§ 1019) ; see § 1039 for the external respiratory. N. thr. ant. (ectal s. cph.), 

 N. thoracicus anterior (ectalis s. cephalicus) — The anterior (ectal or cephalic) division 

 of the thoracic nerve (§ 1018). N. m. ctn., N. musculo-cutaneus— The musculo-cutane- 

 ous or the external cutaneous nerve (§ 1033). N. sbscp., N. subscapularis — The sub- 

 scapular nerve (§ 1033). N. crcm., N. circumflexus — The circumflex nerve (§ 1034). N. 

 m. spiralis, N. musculo-spiralis — The musculo-spiral nerve (§ 1036). N. medius s. me- 

 dianus — The median nerve (§ 1025). N. int. ctn., N. cutaneus internus — The internal 

 cutaneous nerve (§ 1031). N. latis., N. m. latissimi — Nerve of the latissimus or the 

 long subscapular nerve (§ 1033). N. thr. ant. (ental. s. cd.), N. thoracicus anterior (en- 

 tails s. caudalis). — The anterior (ental or caudal) thoracic nerve (§ 1018). N. thr. post., 

 N. thoracicus posterior — The posterior thoracic or the external respiratory of Bell 

 (§§ 1018, 1029). N. radialis — The radial nerve, a branch of the musculo-spiral (g 1026). 

 N. interos. ant., N. interosseus anterior^ — The anterior interosseous nerve ; the pos- 

 terior interosseus is a branch of the musculo-spiral (g§ 1035, 1036). Pili tactiles — Tactile 

 hairs ; to these extend a branch of the N. ulnaris (§ 1028). Ramus dorsalis — The dorsal 

 branch of the ulnar nerve (§ 1039). Trachea — The windpipe (§ 799). 



Preparation of Fig. 106. — This is the same as for Fig. 105, except that all of the soft 

 parts were removed so as to show the exit of the nerves from the intervertebral foramina. 



Explanation of Fig. 106. — A. brachialis — The brachial artery. N. suprascapularis 

 — The suprascapular nerve. N. crv. (6), N. cervicalis — The 6th cervical nerve. N. sub- 

 scapularis — The subscapular nerve. N. crv. (7), N. cervicalis — The 7th cervical nerve. 

 N. musculo-cutaneus — The musculo cutaneous or external cutaneous nerve. N. crcm., 

 N. circumflexus — The circumflex nerve. N. thr. ant. (ectal. s. cph.), N. thoracicus 

 anterior (ectalis s. cephalicus) — The anterior (ectal or cephalic) division of the thoracic 

 nerve. N. medius s. medianus — The median nerve. N. musculo-spiralis — The name 

 is not written, but it is the large blank one arising from the 8th cervical ; see Fig. 104 and 

 105, § 1036. N. crv. (8), N. cervicalis— The 8th cervical nerve. N. ulnaris— The ulnar 

 nerve. N. thr. (1), N. thoracicus s. dorsalis — The 1st thoracic or dorsal nerve. N. 

 cutaneus internus — The internal cutaneous nerve. N. latis., N. m. latissimi — The 



