THE MUSCULATURE 45 



281. Sartorius, a flat strip of muscle, extending straight 

 down the thigh. Origin from ilium: insertion on 

 tibio-fibulare. 



282. Adductor magnus, large and thick, mesial of the 

 sartorius, beneath which it passes distally. Origin 

 from pubis and ischium: insertion on femur. 



283. Gracilis (rectus internus) major, a large muscle at 

 the mesial border of the thigh. Origin from ischium: 

 insertion on tibio-fibula. 



284. Gracilis (rectus internus) minor, a small thin 

 muscle, forming the mesial margin of the thigh. 

 Origin from ischium: insertion with that of the 

 gracilis major. 



In the shank commencing at the lateral margin: 



285. The tibialis anticus longus. Origin from femur: 

 insertion on tibiale and fibulare. 



286. Extensor cruris, a slender muscle lying close to the 

 tibio-fibula. Origin from femur: insertion on tibio- 

 fibula. 



287. Tibialis anticus brevis, very short. Origin from 

 tibio-fibula: insertion on tibiale. 



288. Tibialis posticus, a long thin muscle lying close 

 to the mesial side of the tibio-fibulare from which it 

 takes its origin: insertion on tibiale. 



289. Plantar longus (gastroci^emius), the largest leg 

 muscle, at the mesial margin. Origin from two heads, 

 one from a tendon connecting femur and tibio-fibula, 

 the other from tendon of triceps: insertion in a broad 

 tendon (aponeurosis) on the sole of the foot. 



Drawing 22. Draw the ventral musculature of the 

 hind leg (x2). 



From the dorsal aspect, identify the folloiving muscles. 

 Sketch. 



