MUSCLES OF THE PELVIC LIMB 



379 



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

 blending with the former. 



The semitendinosus arises from the tuber ischii only. It ends on the crest and 

 medial surface of the tibia. 



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

 into two parts : the anterior part ends on the tendon of the pectineus, on the femur 

 above the medial condyle, and on the medial sesamoid bone; the posterior part 



Fig. 326. — Muscles of Pelvic Limb of Dog; Medial View. 



a. Ilio-psoas; 6, tendon of psoas minor; c, sacro-coccy- 



K'us vontralis lateralis; d, coccygeus; e, piriformis; /, obtur- 



f rinternus; y, origin of retractor ani; /i, /i', sartorius; i, rec- 

 ta fcmoris; k, vastus medialis; I, pectineus; m, adductor; 

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

 1 1 jrnemius, medial head ; q', tendon of gastrocnemius ; r, 

 superficial digital flexor; r', tendon of r; s, tarsal tendon 

 ot biceps femoris; t, popliteus; u, flexor hallucis longus; u', 

 long digital flexor; u", common tendon of u and u'; v, tendon 

 of tibialis posterior; w, tibialis anterior; x, tendon of long 

 digital extensor; 1, pelvic surface of ilium; 2, section of sym- 

 physis pelvis; 3, tuber ischii; 4< medial condyle of femur; 

 5 ligamentum patellaj; 6, 7, medial surface of tibia; 8, tarsus; 

 S fibular tarsal bone; 9, metatarsus. (EIIenberger-Baum, 

 Anat. d. Hundea.) 



ends on the medial condyle of the tibia, the tendon passing under the medial liga- 

 ment of the stifle joint. • r u j 



It is not possible clearly to separate the quadriceps femoris mto tour heads. 

 The vastus lateralis is so much larger than the vastus medialis as to indicate that 

 the vastus intermedius is incorporated with the former. The rectus femoris has 

 only one tendon of origin. There is a bursa under the muscle at the distal third 

 of the femur. The single patellar ligament acts as the tendon of insertion of the 

 quadriceps. 



