196 



STUDIES IN PHYSIOLOGY 



the radius and ulna are the ringer extensors. The origin of 

 each of these sets of muscles is in the region of the elbow 

 joint. Long tendons, easily felt in the wrist region, run 

 over the carpals and metacarpals and are attached to the 



Extensor* of fh Hnd ......_ 



_/lexot$ of the Hand 



Ft0' Of th* Foot 



_Gitroenemiu 



_Tendo AcriillM 



FIG. 89. Muscles of the Body. 



tips of the various phalanges. By this arrangement the 

 muscles that move the ringers are placed up in the forearm 

 out of the way, thus allowing a small and graceful outline 

 for the hand. 



The same pairing off of muscles is likewise seen in the leg 



