VIIL] THE MUSCLES. 303 



The sartorius is a long flat ribbon-like muscle, passing 

 obliquely down from the front margin of the ilium to the side 

 of the tibia just below the tuberosity. 



The great extensor of the leg, the quadriceps, consists of 

 four parts (i) the rectus femoris, passing down from the 

 anterior, inferior spinous process and the brim of the aceta- 

 bulum ; (2) the vastus externus, and (3) the vastus intermts, 

 fleshy masses attached respectively to the outer and inner 

 sides of the shaft of the femur ; and (4) the crureus, con- 

 sisting of fibres springing from the front of the thigh-bone. 

 The whole are inserted, by a tendon attached to the patella, 

 into the tuberosity of the tibia. 



Gracilis. A muscle thus named, flat and thin, springs 

 from the pubis (close to its symphysis), and is inserted by a 

 tendon into the tibia beside the tuberosity. 



The pectineus passes from the ilio-pectineal line to the 

 femur below the lesser trochanter. 



The adductores longus, brews, and magnus, pass down- 

 wards and outwards from the pubis to the femur, and are 

 respectively inserted into the middle third of the linea 

 aspera, into below the lesser trechanter, and into the whole 

 length of the linea aspera down to the inner condyle. 



Three muscles,. called the ham-string muscles, are (i) the 

 biceps femoris, which springs both from the fernur and (by 

 tendon) from the tuberosity of the ischium, and is inserted 

 into the head of the fibula ; (2) the semi-tendinosus, which 

 arises from the ischium in common with the last, and is 

 inserted inside the tibia, below its tuberosity ; (3) the semi- 

 membranosus, which springs from the tuberosity of the 

 ischium (in front of the origin of the biceps], and is inserted 

 triply, (a] into the tibia behind its inner tuberosity, (b) under 

 the internal lateral ligament at the side of the inner tubero- 

 sity, (c) into the external condyle of the femur. 



13. The MUSCLES OF THE LEG consist in front of seven 

 muscles. 



The tibialis anticus extends along the outer side of the tibia 

 downwards from its outer tuberosity, and ends below in a 

 tendon which is inserted into the ento-cuneiforme and first 

 metatarsal. 



The extensor proprius hallucis arises from the fibula and 

 the interosseous membrane connecting that bone with the 

 tibia. Its tendon is inserted into the second phalanx of the 

 great toe. 



The extensor longus digit or urn pedis arises from the fibula 



