308 



THE MUSCLES OF THE OX 



IV. INTERNAL MUSCLES OF THE THIGH 

 The sartorius arises by two heads, one from the tendon of the psoas minor 



and the ihac fascia, the other from the shaft of the ihum. The femoral vessels 



pass between them. 



The gracilis is more extensively united with its fellow than in the horse. 

 The pectineus is large, and arises by a single head from the pubic crest and 



Fig. 221. — Left Tarsu.s of Ox with Syno- 

 vial Sheaths and Burs.b Injected, 

 External View. 



1, Peroneus tertius; 1' , tendon of 1 and 

 its sheath, 1" ; 2, extensor digiti tertii pro- 

 prius; 2' , tendon of 2; 2" , common sheath of 

 tendons of extensor digiti tertii and extensor 

 digitalis longus (3, 3'); 4. peroneus longus and 

 its sheath, 4' ! 5, extensor digiti quarti and its 

 .sheath, 5'; 6, tendon of gastrocnemius; 7, 

 superficial digital flexor and its sheath, 7'; 

 8, tendon of tibialis anterior; a, tibia; b, proxi- 

 mal annvilar ligament; c, tarsus; d, distal an- 

 nular ligament; e, metatarsus; /, external 

 lateral ligament. (After Schmidtchen.) 



Fig. 222. — Left Tarsus or Ox with Synovial Sheaths and 

 BuRS.E Injected, Intern.-vl View. 

 1, Peroneus tertius; 2, tendon of tibialis anterior with 

 sheath, 2' , and bursa, 2" ; 3, long digital flexor and 3', its sheath; 

 4, tibialis posterior; 5, deep digital flexor and its sheath, <5'; G, 

 tendon of gastrocnemius and bursa, 6' ; 7 , superficial digital flexor 

 and its sheath, 7'; S, subcutaneous bursa; a, tibia; b, proximal 

 annular ligament; c, tarsus; d, metatarsus. (After Schmidtchen.) 



prepubic tendon. It divides into two branches, one of which is inserted as in the 

 horse, while the other extends to the internal epicondyle of the femur. 



The adductor resembles that of the horse, but does not reach to the internal 

 condyle. 



The quadratus femoris and obturator externus resemble those of the horse. 



The obturator internus arises from the ischium only, and its tendon passes 

 through the ol)turator foramen. 



The gemellus is large. 



