24 THE ARMY HORSE. 



scapula, near the shoulder joint, and passes down in front of 

 that joint and the humerus and becomes attached to the upper 

 front part of the radius. Action, to flex the elbow joint and 

 extend the shoulder. 



The fexor 'pedis perforatus originates from the inner and 

 lower part of the humerus; it passes down the back part of the 

 leg, becoming tendinous just above the carpus; below the pas- 

 tern it l>ifurcates, forming a ring for the passage of the tendon 

 of the perforans and becomes attached to the sides of the os 

 corona?. Action, to bend or flex the knee, fetlock, and pastern. 



The'_^ea?o/' pedis perforans originates with the perforatus; 

 its fleshy jjortion passes down and is attached to the back part 

 of the radius; its tendinous portion, beginning at the knee, 

 passes down the leg between the cannon bone and the tendon 

 of the perforatus, over the back of the fetlock, through the arch 

 formed by the division of the tendon of the perforatus, and is 

 attached to the under surface of the os pedis. Action, to flex 

 the knee and all joints below. 



The extensor pedis of the hind leg originates from the lower 

 and front part of the femur; its fleshy portion extends down- 

 ward along the front surface of the tibia to the hock, wdiere it 

 becomes tendinous; passing thence down the front of the leg 

 it is attached in the same manner as the extensor pedis of the 

 front leg. Action, to extend the leg and flex the hock. 



The peroneus has its origin from the external ligament of the 

 stifle and from the outer part of the fibula, and is inserted to 

 the tendon of the extensor pedis a short distance below the 

 hock. Action, to assist the extensor pedis. 



The tendon of the peroneus is cut in the operation for string 

 halt. 



The -flexor metatarsi is divided into two portions — a muscular 

 and a tendinous. The tendinous part is a strong pearl-white 

 cord, situated between the muscular portion and the extensor 

 pedis. It commences at the lower extremity of the femur, and 

 terminates in two branches — a large one inserted in front of 

 the upper extremity of the cannon bone and a small one devia- 

 ting outward to reach the front surface of the cuboid hone. 

 The fleshy portion originates on the front face of the tibia and 

 is inserted by two tendons, one in the head of the large meta- 

 tarsal bone, the other in the small cuneiform on the inner side 

 of the hock. Action, to flex the hock. 



