100 



THE MUSCLES. 



which passes the tendon of one head of the 7n. semitendinosus (Fig. 

 83 st'') ; [h) a second part arises from this same tendon (Fig-. 83 sf^') 

 and joins with the first part. Thus formed the muscle passes to be 

 inserted into the distal half of the inner surface of the femur as 

 far as the condyle. Near its hinder extremity, however, it passes 

 on to the dorsal and outer surfaces, and thus forms a kind of 

 muscular sheath surrounding- the distal portion of the bone. 



and 



121. [c] M. addncior Irevis (Fig-s. 81, 83 ad"), 



122. [d] 31. pecthmis (Fig. 83 i^e). 



Dugès, sous-pubio-femoral (analogue of the pectineus, possibly of the 

 add. brevis also). 



These two small muscles which lie under cover of the sartor ins, adduc- 

 tor longns and magnns, 



Fig. 83. 



Dee]) muscles of left thigh of Raiia escuknfa. 



acV M. adductor longus. 



ad" M. adductor brevis. 



ad"' M . adductor magnus. 



ip M. ilio-psoas. 



pe M. pectineus. 



ra M. rectus anticus, 



ri' M. rectus internus maior 



ri" M. rectus internus minor 



« M. sartorius. 



St Belly of m. semitendinosus. 



St' M. semitendinosus (cap. posticum). 



si" M. semitendinosus (cap. anticum). 



St'" Fibres passing into the adductor magnus. 



ri M. vastus intern\iM, 



. cut through. 



appear externally as one 

 muscle, bu^t may easily be 

 separated (Fig. 83). They 

 arise close together from 

 the pubic symphysis, and 

 are inserted into the 

 inner surface of the an- 

 terior half of the femiu*. 

 They are not attached to 

 the adductor magmis. 



123. M. semitendinosns 

 (Fig. 83 St, sf, stf'y 



Dugès, bis - ischio - tibial, 

 11. 153. — Zenker, li- 

 reps. 



This is a long thin mus- 

 cle, only visible after re- 

 moval of the w. rectus 

 internus, by which it is en- 

 tirely covered. It arises 

 by two long thin tendons, 

 one {cajmt posticnm, st') 

 from the pubic symphysis, 

 the other (caput anticum, 

 st") from the hollow be- 

 tween the symphysis and 

 the acetabulum. Thelatter 



