250 



MUSCLES OF THE LOWER LIMB. 



vessels and internal popliteal nerve, Tlie short saplicnous vein is placed on its 

 sui'face, in the interval between its two parts. 



TiJ7'ieticii'. — The gastrocnenaius is, in some cases, joined by a bundle of muscular 

 fibres, whicli arises separately from the femur above one of the condyles. This 

 bundle has l^een obser\'ed passing between the popliteal artery and vein (R. Quain, 

 op. cit., plate 80, figs. -1 and 5). 



19-1. 



Fig. 194. — Superficial Muscles of 

 THE Leg, seex froji the inner 

 SIDE (after Bourgcry). -| 



1, vastus internns ; 2, sartorius ; 

 2', its tendon, spreading on the inner 

 upper ijart of the tibia ; 3, graciUs ; 

 4, semitendinosus ; 4', its insertion ; 

 and between 2' .nnd 4', that of the 

 gracilis ; 5, semimembranosus ; 6, 

 inner head of the gastrocnemius ; 7, 

 soleus ; 8, 8', placed iipou the tendo 

 A chillis, point to the small tendon of 

 the plantaris descending on the inner 

 side ; 9, small part of the tendon of 

 the tibialis posticus ; 10, flexor com- 

 munis digitorum ; 11, flexor longus 

 pollicis ; 12, tibialis anticus ; 12', its 

 tendon of insertion ; 13, abductor pol- 

 licis. 



Tlio soleus muscle arises 

 externally from the posterior 

 surface of the head and upper 

 third of the shaft of the 

 fibula ; internally from the 

 oblique line which gives inser- 

 tion to the popliteus, and from 

 the ])Osterior edge of the tibia 

 about three inches below that 

 line ; and between the tibia 

 and fibula, from a tendinous 

 band which arches over the 

 posterior tibial vessels and 

 nerve. Inferiorly, the muscular 

 fibres descend upon the tendo 

 Achillis considerably further 

 than those of the gastroc- 

 nemius. The posterior surface 

 presents a thin covering of 

 longitudinal aponeurotic fibres 

 continued up from the tendon 

 below, and gliding on the 

 similar tendinous surface of 

 the gastrocnemius muscle. On 

 the deep surface the edges of 



two membranous tendons, the other edges of which look towards the 

 middle line of the muscle, imbedded in its sitbstance, are seen descend- 

 ing from tlie tibial and fibular origins : the fibres from the deep 

 aspects of those tendons are directed obliauely inwards to a tendinous 



