T20 



ANATOMY OF THE DOMESTIC FOWL 



Extensor Brevis Digitorum. Location. — On the anterior surface 

 of the metatarsus. 



Fig. 25. — Inner layer of muscles of the thigh of a hen. Outside view. 



A. Pad of fibrocartilage or meniscus of femoro-tibial articulation, i, Inner 

 semilunar fibrocartilage. 2, External semilunar cartilage. 3, Anterior border. 



B. Tarsal meniscus or pad o£ fibrocartilage. 



C. Articular surface of the tarsal joint, i , Posterior ligamentum cruciatum 

 genu. 2, Femoral tendinous'insertion of tibialis antieus. 3, Ligamentum tibio- 

 fibulare. 4, Ligamentum interosseum. 5, Ligamentum transversum of the 

 meniscus. 6, Anterior ligamentum cruciatum genu. 



D. I, Tibia. 2, Fibula. 3, Femur. 4, External ligamentum laterale genu. 



E. Inferior surface of the tail of a hen. i, Infracoccygis. n. Lateralis coccy- 

 gis. 



F. Outside pelvic view, i, Obturator ligament. 2, Tendon of the obturator 

 intemus. 3, Ligamentum oblongum. 4, Ligamentum capsulare. 5, Gemellus. 



G. Outside view of leg of a cock, i, Soleus. ^, Flexor longus hallucis. 3, 

 Flexor perforans digitorum profundus. 4, Extensor brevis hallucis. 5, Extensor 

 brevis annularis. 6, Extensor longus digitorum. 7, Tendon of the tibialis 

 posticus. 



H. 1, Transversalis abdominalis. ^, Cotyloid cavity. 



Origin. — ^By a small fleshy belly to the anterior part of the 

 proximal end of the metatarsus. 



Insertion. — It becomes tendinous about the middle third of the 

 metatarsus. Extending down the anterior face of the metatarsus it is 



