MUSCLES OF THE PELVIC LIMB 



327 



ischii. The aponeurosis of insertion ends on the patella, the patellar ligament, 

 and the tibial crest. There is also a tendinous band, which comes from the deep 

 face of the muscle and terminates at the tarsus, as in the horse. 



The abductor cruris posterior may be regarded as an accessory head of the 

 biceps femoris. It is a thin, muscular band which arises on the sacro-sciatic 

 ligament, passes downward between the biceps and semimembranosus, and ends by 

 blending with the former. 



The semltendinosus arises from the tuber ischii only. It ends as in the horse. 



236. — Misci.ES or Pki.vic Limh of Doo, I.ntkrnal 



ViKW. 



a, Ilio-psoa-s; b, tendon of psoas minor; e, sacro-coccy- 

 geus veiitralis lateralis; rf, coccygeus; e, pyriforniis; /.obtur- 

 ator internus; ij, origin of retractor ani; h, h', sartorius; t, rec- 

 tus femoris; k, vastus internus; /, pectineus; m, adductor; 

 n. gracilis; o, semitendinosus; p, semimembranosus; q, gas- 

 trocnemius, inner head; i/', tendon of ga-strocnemius; r, super- 

 ficial digital flexor; K, tendon of r; s, tarsal tendon of biceps 

 femoris; t, popliteus; u. deep digital flexor, outer head (flexor 

 hallucis longus); u', long iligital flexor; u", common tendon of 

 u and u'; v, tendon of tibialis posterior; w, tibialis anterior; 

 X, tendon of anterior or long digital extensor; I, pelvic sur- 

 face t)f ilium; 2, section of symphysis pelvis; 5, tuber i.schii; 

 4, internal condyle of femur; o, ligamentum patella-; 6.7, in- 

 ternal surface of tibia; S, tarsus; 8', fibular tarsal bone; 9, 

 metatarsus. (Ellenberger-Baum, Anat. d. Hundes.) 



The semimembranosus is large and arises from the ischium only. It divides 

 into two portions: the anterior portion ends on the tendon of the pectineus, on the 

 femur above the internal condyle, and on the inner (Vesalian) sesamoid bone; 

 the posterior portion ends on the internal condyle of the tibia, the tendon passing 

 under the internal lateral ligament of the stifle joint. 



The rectus femoris has only one tendon of origin. The single patellar ligament 

 acts as the tendon of insertion of the quadriceps. 



