THE LIMBS OF THE HOESE 



63 



lateral edge of the flexor tendons, it enters the narrow interval between 

 the fourth metacarpal bone and the middle interosseous muscle, and 



ST. extensor digitorum communis 



Lig. collateral? mediale. 



M. interosseus. 



Iff. volaris medialis 

 (ramus dorsalis). 



A. digitalis volaris medialis. 

 BT. volaris medialis (ramus volaris) 

 V. digitalis medialis. 



M. extensor digiti quint i, 



. Third metacarpal bone. 



Lig. collaterale lateralp. 



Sesamoid. 



-.V. digitalis lateralis. 



. N. volaris lateralis (ramus 



dorsalis). 

 • A. digitalis volaris lateralis. 



s N. volaris lateralis (ramus 

 volaris). 



Jtf. flexor digitorum sublimis. 

 M. flexor digitorum profundus. ' 



Fig. 43. — Section across the Distal End of the Metacarpus as indicated by J iu Fig. 30. 



thereafter pursues a course comparable to that of the medial artery 

 of the same name. 



In the proximal part of the metacarpus transverse vessels unite 



First phalanx. % 



M. interosseus. 



M. extensor digitorum communis. 



V. digitalis medialis 



X. volaris medialis (ramus 

 dorsalis). 

 A. digitalis volaris medialis. 



X. volaris medialis (ramus 

 volaris). 



Lig. sesamoideum obliquum./ 



Lig. sesamoideum rectum. 



M. flexor digitorum profundus. 



Hi-ii. interosseus. 



-V. digitalis lateralis. 



^N. volaris lateralis (ramus 

 dorsalis). 



s N. volaris lateralis (ramus 

 volaris). 



; A. digitalis volaris lateralis. 

 Lig. sesamoideum obliquum. 

 M. flexor digitorum sublimis. 



Fk;. 44.— Section across the First Phalanx at the Level indicated by K in Fig. 30. 



the two volar metacarpal arteries by crossing the limb deep and 

 superficial to the middle interosseous muscle. These communicating 

 vessels constitute the deep volar arch (arcus volaris profundus). 



