306 



THE MUSCLES OF THE OX 



diverge to be inserted into the second and third phalanges, blending with the 

 lateral ligaments. 



The Muscles of the Pelvic Limb 

 i. the sublumbar muscles 



The psoas minor l^egins at the disc between the twelfth and thirteenth thoracic 

 vertebrae. 



The psoas major has a fleshy origin on the posterior border of the last rib, and 

 a thin tendon attached to the twelfth rib. 



The iliacus begins under the body of the sixth lumbar vertebra, and is more 



closely united with the psoas major than in the 

 horse. 

 ., The quadratus lumborum extends as far 



^;^ A forward as the body of the tenth or eleventh 

 thoracic vertebra. 



11. EXTERNAL MUSCLES OF THE HIP AND 

 THIGH 



The tensor fasciae latae is large, and the 

 fleshy part extends further down than in the 

 horse. 



The gluteus superficialis is not present as 

 such; apparently its anterior part has fused 

 with the tensor fascise latae and its posterior 

 with the biceps femoris. 



The gluteus medius is small, the lumbar 

 portion being insignificant and extending for- 

 ward only to the fourth lumbar vertebra. Its 

 deep portion (Gluteus accessorius) is easily 

 separable, and its strong tendon is inserted 

 into the femur below the trochanter major, 

 under cover of the upper part of the vastus 

 extern us. 



The gluteus profundus is thin, but exten- 

 sive, arising as far forward as the external 

 angle of the ilium, and from the lower part of 

 the sacro-sciatic ligament. The fibers converge 

 on a tendon which passes untler the upper part 

 of the vastus externus, and is inserted into a 

 tubercle a short distance below the great tro- 

 chanter. 



Fig. 218. — Gluteal and Femoral Regions 

 OF Ox, After Removal of Super- 

 ficial Muscles. 



p, Gluteus medius; r.semitendinosus; 

 «, coccygeus; 2S, vastus externus; S8' , rectus 

 femoris; 29, semimembranosus; SO, gastroc- 

 nemius; 31, sacro-sciatic ligament; 16, tuber 

 coxa?; 17, tuber ischii; 19, trochanter major; 

 20, patella; 21' , external condyle of tibia. 

 (.\fter Ellenberger-Baum, .\nat. fvir Kiin.st- 

 ler.) 



The biceps femoris is very wide at its 

 upper part, having apparently absorbed the posterior part of the superficial 

 gluteus. It is divided in the thigh into two portions, which end on a wide 

 aponeurosis. There is no femoral attachment. A large bursa occurs between 

 the muscle and the great trochanter in the adult. The part of the tendon which 

 fuses with the external patellar ligament presents a fibro-cartilaginous thicken- 

 ing, and an extensive bursa is interjwsed lictween it and the external condyle of 

 the femur. 



The semitendinosus and semimembranosus arise on the ischium only. The 

 latter has a branch attached to the internal condyle of the tibia. 



k 



