28 EQUINE ANATOMY. 



Attachments : Internal face of the humerus, summit of 

 the olecranon, and a little below. Action : Extensor 

 of the fore-arm. 



5. Small extensok of the fore-aem. Synonyms. 

 Anconeus. Small olecrano-humeralis, (G). Attach- 

 ments : Margin of the olecranon fossa, anterior and 

 external part of the olecranon. Action : Extensor of 

 the fore-arm. 



Antibrachial Region,— Division. Anterior and pos- 

 terior. 



Anterior region, four muscles. 



1. Anterior extensor of the metacarpus. — Syno- 

 nyms. Epicondylo-premetacarpeus, (G). Extensor 

 metacarpi magnus, (P). Humero-metacarpeus, (L). 

 Attachments : Crest limiting downwards the groove of 

 torsion of the humerus, above and in front of the infe- 

 rior articular surface of the humerus, supero-anterior 

 tuberosity of the principal metacarpal bone. Action : 

 Extensor of the metacarpus. 



2. Oblique extensor of the metacarpus. — Syno- 

 nyms. Cubito or radio-premetacarpeus, (G). Extensor 

 metacarpii obliquus vel parvus, (P). Kadio-metacar- 

 peus, (L). Attachments : External side of the radius, 

 head of the internal small metacarpal. Action : Exten- 

 sor and rotator of the metacarpus. 



3. Anterior extensor of the phalanges. — Syilo- 



