68 



ANATOMY FOR NUHSES. 



[CHAP. VI. 



face of the humerus. It 

 is of large size, and divided 

 above into three heads ; 

 hence its name. It is 

 inserted into the ulna. 

 It is the great extensor 

 muscle of the forearm, 

 and is the direct antago- 

 nist of the biceps. 



The muscles covering 

 the forearm are disposed 

 in groups, the pronators 

 and flexors being placed 

 on the front and inner 

 part of the forearm, and 

 the supinators and exten- 

 sors on the outer side and 

 back of the forearm : they 

 antagonize one another. 

 The pronators turn the 

 palm of the hand down- 

 wards or prone, the supi- 

 nators turn it upwards or 

 supine. The flexors and 

 extensors have long ten- 

 dons, some of which are 

 inserted into the bones of 

 the wrist, and some into 

 the bones of the fingers : 

 they serve to flex and ex- 

 tend the wrist and fingers. 



Muscles of the lower ex- 

 tremity. These include 



FIG. 60. MUSCLES OF THE THIGH. 46, glu- the muscles of hip, thigh, 

 teus maximus ; 36, 35, posterior femoral; 33, sar- , , , T1 . 



torius ; 27, 26, internal femoral or adductor. le g> ancl ot ' 



prominent of these are : 



Glutei or gluteal muscles. 

 Posterior femoral. 

 Anterior femoral. 

 Internal femoral. 



Tibialis anticus. 

 Extensors. 

 Peroneal. 

 Gastrocnemius. 



Soleus. 

 Flexors. 

 Tibialis posticus. 



