60 VETEEINAEy STATE BOARD 



passes, and is inserted in front of the superior extremity of the 

 principal metatarsus and the second cuneiform bone. 



2. Anterior extensor of the phalanges : originates in the digital 

 fossa above the external condyle of the femur ; and is inserted in the 

 capsular ligament of the metatarsophalangeal artictilation, the an- 

 terior surfaces of the first two phalanges, and the pyramidal emi- 

 nence of the OS pedis. 



3. Lateral extensor of the phalanges: originates along the ex- 

 ternal femorotibial ligament and the whole extent of the fibula, and 

 terminates in the tendon of the anterior extensor. 



Give the origin, course, relations and termination of the lateral ex- 

 tensor of the phalanges (peroneus). 



Origin and termination given above. 



The muscular portion extends in the direction of the tibia on the 

 external side from the superior to its inferior extremity. The 

 tendinous- portion, succeeding the muscular portion, passes to the 

 external side of the tarsus through the tibial sheath and passes for- 

 ward to join the tendon of the anterior extensor, near the middle of 

 the metatarsal region. 



The muscular body is enveloped in a special containing apo- 

 neurosis which separates it in front from the anterior extensor and 

 behind from the perf orans. The tendon covers the tibia and margins 

 the external and superficial ligament of the tibiotarsal articulation. 



Name the muscles of the tail. 



Six sacrococcygeal muscles, viz., two superior, two inferior and 

 two lateral ; two ischiococcygeal muscles. 



Describe the panniculus carnosus muscle. 



An immense wide muscle on the inner surface of the sMn, cover- 

 ing the sides of the thorax and abdomen. It is irregularly triangular, 

 thin at its borders and thicker in its middle. 



Origin : From the flank to the posterior border of the ulnar mass 

 of muscles and pectoralis major. 



Insertion: One layer to the anterior limb and one to the small 

 trochanter; aponeurotic fibres attach it to the internal surface of 

 the skin and fascia of the superficial muscles. 



Action: In contracting, the whole cutaneous integument is 

 shaken, thus preventing insects from alighting. 



Give the origin, insertion and action of the longissimus dorsi. 



Origin : The lumbar border, external angle and internal surface 

 of the ilium, and the spinous processes of all the lumbar, dorsal and 

 last four cervical vertebrae. 



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