276 



COMPARATIVE ANATOMY 



The dorsal muscles of the neck extend the head and bend the neck. 

 Included in this group are the splenius, longissimus, semispinalis, 



TEMPORALrf--- 

 OCCIPITALf 

 STERNOCLEIDOMASTOID. 



izius^r^ 



SPINE OF SCAPULAi,„*^'\ \ 

 DELTOID-^- ^ 



INFRASPINATUS 

 TRICEPS 

 BICEPS 



/EXr.POLUCIS BREVIS. 

 .ABD.POLLICIS LONGUS. 

 / FLEX . DIGITORUM PROF. 



SUPERFICIAL 

 ■r-^EXTENSORS 

 AX OF FOREARM. 



^riV- ANCONEUS. 



,___i^»'**'VEXT CARPI RADIALIS. 

 BRACHIALIS.\^°^<=^S 



'brachioradial. 



BRACHIORADIAL 



FLEX. CARPI ULNy 



EXT. CARPI ULN -/* 



PALMARIS LONG 



FLEX CARPI RAD 



FLEX DIGITORUM- 

 PROFUNDUS. 



VASTUS LATERALIS 



PERONEUS LONGUS. 



/CRUCIATE LIGAMENT. 



ACHILLES TENDONr 



FlG. 230. — Superficial muscles of human body back view. (Reproduced in modified 

 form from "The Human Body" by Dr. Logan Clendening, (Copyright 1927, 1930 by 

 Alfred A. Knopf, Inc.) by permission of and special arrangement with Alfred A. Knopf, 

 Inc., authorized publishers.) 



multifidus, and the long and short rotators, the most powerful being the 

 semi-spinalis. Also on the back of the neck, connecting the occipital 

 bone with the first two cervical vertebrae, are the rectus and obliquus 



