THE LIMBS OF THE HOESE 63 



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

 the fourth metacarpal bone and the middle interosseous muscle, and 



M. extensor (iigitorum coniiuuni 



Lig. collateiale niediale. 



M. intei'osseus. 



N. Vdliiris lut'dialis 

 (ramus doisalis). 



A. iligitalis volaris mediatis.-'r 

 N. volaris niedialis (ramus volaris) 



V. dif;italis niedialis. ' 



M. extensor digiti quinti. 



Tliird metacarpal bone. 



Lig. collaterale laterale. 



Se.samoid. 



..V. digitalis lateralis. 



N. volaris lateralis (ramus 



dorsalis). 

 A. digitalis volaris lateralis. 



N. volaris lateralis (ramus 

 volaris). 



.M. flexor digitorum sublimis. 

 M. flexor digitorum profundus. , 

 Fio. 43. — Section across the Distal End of the iletacar])us 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 



Jl. interosseus 



V. digitalis medialis 



N. volaris medialis (ramu.s 

 dorsalis). 

 A. digitalis volaris medialis 



X. volaris medialis (ramus 

 volaris). 



Lig. sesamoideum oljliciuuni./ 



Lig. sesamoideum rectum. 



M. Hexor digitorum profundus. 



M. extensor digitorum communis. 



Ji. interosseus. 



-V. digitalis lateralis. 



-N. volaris lateralis (ramus 

 dorsalis). 



N N. volaris lateralis (ramus 

 volaris). 



; • A. digitalis volaris lateralis. 



Lig. sesamoideum obliquum. 

 M. flexor digitorum sul)limis. 



Fio. 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). 



