112 



ANATOMY FOR NURSES 



[C HAl'. VII 



Action. — It is the great exten- 

 sor musele of the forearm, and is 

 tlie direct antagonist of the l)ieeps. 



Muscles of the forearm. — The 

 muscles covering the forearm are 

 disposed in groups, the pronators 

 and flexors being placed on the 

 front and inner part of the fore- 

 arm, and the supinators and ex- 

 tensors on the outer side and back 

 of the forearm : they antagonize 

 one another. The pronators turn 

 the palm of the hand backward 

 and, when the elbow is flexed, 

 downward or prone. The supi- 

 nators turn the palm of the hand 

 forward, and, when the elbow is 

 flexed, upward or into the supine 

 position. The flexors and exten- 

 sors have long tendons, some of 

 which are inserted into the bones 

 of the wrist, and some into the 

 bones of the fingers : they serve 

 to flex and extend the wrist and 

 fingers. 



MUSCLES OF THE LOWER 

 EXTREMITIES 



If we compare the muscles of 

 the shoulder, arm, and forearm 

 with those of the hip, thigh, and 

 leg, we shall see that the anterior 

 muscles of the former correspond 

 roughly with the posterior muscles 

 of the latter, the muscles of the 



Fig. 82. — 



Muscles in hip, thigh, and leg, however, be- 

 of?h?rTght i"g larger and coarser in texture 

 Forearm AND than those of the shoulder, arm, 



Hand. (Ger- 



rish.) and forearm. 



