310 



THE MUSCLES. 



composed of the gastrocnemii, of which we will say nothing, and the soleus. The latter 

 is flattened from before to behind, attached to the upper third of the fibula, the oblique 

 line of the tibia, and the middle third of the inner border of this bone, and terminated 

 by an aponeurotic lamina which is blended with the tendo- Achilles. The plantaris is 

 formed by a small fusiform muscular body, situated beneath the external gemellus, then 



Fig. 139. 



Fig. 140. 



MUSCLES OF THE HUMAN LEG; ANTERIOR 

 TIBIAL REGION. 



1, Quadriceps extensor inserted into the pa- 

 tella the figure is on the tendon of the 

 rectus, the vastus internus and externus 

 being on each side ; 2, Subcutaneous sur- 

 face of the tibia ; 3, Tibialis anticus ; 4, 

 Extensor longus digitorum; 5, Extensor 

 proprius pollicis; 6, Peroneus tertius; 7, 

 Peroneus longus;. 8, Peroneus brevis; 9, 9, 

 Borders of the soleus muscle ; 10, Part of 

 the inner belly of the gastrocnemius ; 11, 

 Extensor brevis digitorum the tendon in 

 front of the cipher is that of the peroneus 

 tertius, that behind it the peroneus brevis. 



by a long slender tendon, which is confounded with the inner border of the tendo- 

 Achilles, or is inserted into the os calcis. 



The deep layer is composed of four muscles: 



1. The popliteus, which in its attachments and position resembles that of animals. 



2. The common long flexor of the <oes,correspondmg to the oblique flexor of animals. 



SUPERFICIAL POSTERIOR MUSCLES OP 

 THE HUMAN LEG. 



1, Biceps forming outer ham-string; 2, Ten- 

 dons forming inner ham-string; 3, Popli- 

 teal space ; 4, Gastrocnemius ; 5, 5, Soleus ; 

 6, Tendo- Achilles ; 7, Posterior tuberosity 

 of os calcis ; 8, Tendons of peroneus longus 

 and brevis passing behind the outer ankle ; 

 9, Tendons of tibialis posticus and flexor 

 longus digitorum passing into the foot 

 behind the inner ankle. 



