sternomastoideus and pars clovotropezius 



pars spinotrapezius 



pectorolis 



extensor pollicis longus et tndicis 



Figure 14-13. Dorsol musculature of the shoulder and arm of /guano. A, superficial muscles; B, 

 some OS A but with trapezius, lotissimus, and superficial layer of foreorm removed. 



SKELETAL MUSCULATURE * 435 



