MUSCLES OF THE HTND LIMT!. 97 



115. M. semmemhranoms (Fig-s. <So, 86 ,S7;/). 



Dugès, sus-ischio-poplité, n. 148. — Klein, p. 60, extensor fonoris 

 snhlimis. 



This muscle lies on the dorsal surface of the thig-h^ to the inner 

 side of the biceps and pyriformu : it is a broad muscle, which takes a 

 tendinous origin from the hinder and upper angle of the syrnphysm 

 omis ilei, and is inserted by a flat tendon into the dorsal surface 

 of the ligaments of the knee-joint, and through these into the 

 tibio-fibula. The tendon is formed rather abruptly from the muscle, 

 and is surrounded (Fig. 86) by the concave arch, which forms 

 the tendon of origin of the yadrocnemms [q. v.). A little behind 

 its middle (compare Fig. 81) the muscle is divided -obliqiiely into an 

 anterior and a posterior portion by an aponeurotic septum. As 

 all the fibres are interrupted by this structure, the muscle may 

 very easily be torn through. 



(B.j Muscles on the ventral siu-face. 



116. M. mrtvrius (Figs. 81, 82 s). 



Dugès, sous-iléo-tibial, n. 150. — "Klein, gracilit. 

 This long, flat muscle lies along the middle of the ventral surface 

 of the thigh ; it arises by a tendon from the anterior inferior angle 

 formed by the symphysis of the innominate bones, and ter- 

 minates in a tendon behind the knee-joint, forming a kind of 

 pes anser'mns in the fascia of the leg, similar to that of the semi- 

 tendinosus ^. 



117. M. rectus intermis major (Ecker), (Figs. 81 ra, 82 )'i'). 



Dugès, post-ischio-tibial profond, n. 152. — Klein, semimembranosus. 



This is a broad and flat muscle, thinned out at either extremity ; 

 it occupies the inner half of the ventral surface of the thigh, and is 

 in relation with the achhicfor magnus externally and anteriorly, with 

 the sartorlus posteriorly, and the rectus minor muscle internally. 

 The muscle arises by a tendon from the pubic symphysis ; 

 it covers in its course the sen/itendinosns, then passes into a 

 strong tendon, which blends with the tendon of the rectus 

 minor, to be inserted by a slip into a process of the tibio-fibula 

 representing the tnljerositas tibiae, first passing between the ten- 

 dons of the sartor ins and semimembranosus, which here form an 

 aponeurotic arch; a second slip passes under the tendon of the 



' The sartorlus has lately been used by Kiiline in his researches on the nerve- 

 endings in muscle and on muscle contraction without nerve supply (du Bois-Key- 

 mond's and Eeichert's Archiv, 1859. Page 314). 



II 



