110 ANATOMY OF THE DOMESTIC FOWL 



Origin. From the shaft of the mid-metacarpal bone, just below 

 the pollex. 



Insertion. Distal apex of the pollex. 



Shape. Short, small, fleshy. 



Relations. Superiorly, with the inferior part of the pollex. 



Action. Flexes the pollex. 



Flexor Minimi Digiti. Location. Inferior side of the metacarpus. 



Origin. From the posterior part of the median metacarpal close 

 to the os carpi ulnare. A few fibers extend to the ulna. 



Insertion. Into the base of the median phalanx. 



Shape. Small, slender, short. 



Relations. Superiorly, with the metacarpal bone. 



Action. A flexor of the digit. 



Flexor Minimi Digiti Brevis (Fig. 13, No. 30). Location. In- 

 ferior to the third, or small finger. 



Origin. From the lower and posterior end of the median meta- 

 carpal and from the adjacent tendon of the preceding. 



Insertion. Inserted to the apex of the small finger. 



Shape. Small and rather rudimentary. 



Relations ^Inferior to the small finger. 



Action. Acts as a posterior ligament of this joint. 



Abductor Minimi Digiti. Location. Supero-lateral side of the 

 small finger. 



Origin. From the proximal extremity of the anterior aspect of the 

 third finger. 



Insertion. To the posterior border of the proximal phalanx of 

 the second, or index-finger at a point just above the tip of the third 

 finger. 



Shape. A few muscular fibers with some tendinous material. 



Relations. At the base of the median segment of the index-finger 

 and to the side of the third. 



Action. Antagonizes the powerful flexors on the back of the 

 joint. 



Interosseus Dorsalis (Fig. 13, No. 31). Location. By the side 

 of the metacarpus. 



Origin. From the margin of the shaft of the median metacarpal. 



Insertion. To the anterior part of the base of the distal phalanx 

 of the index digit. 



Shape. Short, delicate, with long tendon. 



Relations. Internally, the metacarpal bone. 



