52 LIGAMENTS AND MUSCLES OF THE HORSE. 



2. Gracilis. 



Origin. — From the ischio-pubic .symphysis, being united to its 



fellow of the opposite side. 

 Insertion. — To the internal straight ligament of the patella, and 



to the supero-internal surface of the tibia. 

 Action. — To adduct the limb and rotate it inwards. 



3. Pectineus. 



Origin — From the brim and inferior surface of the pubis, on 

 each side of the pubio-femoral ligament, from which some 

 fibres arise. 



Insertion. — To the internal border of the femur, near the 

 nutrient foramen. 



Action —To adduct the limb and flex the hip. 



4. Adductor brevis 



Origin — From the inferior surface of the pubis. 



Insertion. — To the posterior surface of the femur, near its 



middle. 

 Action. — To adduct tlie femur and rotate it outwards. 



5. Adductor Longus. 



Origin. — From the inferior surface of the ischium. 



Insertion. — To the back of the femur, with the brevis, and to 



the supracondyloid crest 

 Action. — To adduct the femur and rotate it outwards. 



6. ISCHIO-FEMORALIS. 



Origin. — From the inferior surface of the ischium. 



Insertion. — To an oljlique line on the back of the femur, near 



the inner trochanter. 

 Action. — To extend and adduct the femur. 



7. Obturator externus 



Origin. — From the inferior surface of the ischium and pubis, 



around the obturator foramen 

 Insertion. — In the trochanteric fossa. 

 Action. — To adduct, extend, and rotate the femur. 



