2lS 



THK SLRCilCAL ANATOMY OF THE HORSK 



MUSCLE 



ORIGIN 



INSERTION 



ACTION 



NERVE- 

 SUPPLY 



Biceps fcmoris or I Sacral spines, coc- Anterior face of One division ex- (jlutcal and great 



triceps abduc- 

 tor femoris 



Vastus externus 



Vastus intern us 



Rectus femoris 



Rectus parvus 



Extensor pedis 



igeai fascia, 

 tuber-ischii, 

 and great sa- 

 cro-sciatic liga- 

 ment 



Outer and ante- 

 rior surfaces of 

 femora! shaft 



patella, tibia 

 crcst,and fascia 

 of leg, and 

 also a slip to 

 back of third 

 trochanter of 

 femur 



tends stifle and 

 abducts hip ; 

 two other divi- 

 sions flex stifle 

 and rotate it 

 outwardly 



sciatic nerves 



Anterior face of Extensor of stiflu Anterior crural 

 patella 



Inner and ante- Anterior face of 

 rior surfaces of patella 



Extensor of stifle 



Fwo pits above ] Anterior face of Extensor of stifle 

 acctabiilum(on patella and flexor of 



ilium) I hip 



Above acetabu- | Anterior surface ' Raises capsular 

 iiMn (on ilium) of femoral shaft ! ligament of hip 



Anterior crural 



Anterior crural 



Anterior crural 



Pit between ex- l'\ ramidal pro- i Elexor of hock ! Anti 

 ternal lip of cess of pedal and extenst)r of 

 trochlea and bone fetlock, pastern 



tibial 



external con- 

 dyle of femur 



and corono- 

 pcdal joints 



Flexor metatarsi Pit between ex- Supero - anterior Flexor of hock Anterior tibial 

 (sup. div.) ternal lip of portion of large 



i trochlea and metatarsal, and 

 external con- to cuboid 

 dyle of femur 



I I 



778 MB BR 



08/I3/9G 41245 



321 1 



