ARTERIES VEINS. 43 



PLANTA'PIS INTES'lTA: forwards along inner side of foot to 

 big toe, anas. \vuh digital branches, supplies abductor pollicis, 

 flexor brevis dlgitorum, etc. 



PLA..TA'E.S EXTSE'NA: (2 brs.); out- and forwards to base 

 5th metatarsus, then turning obliquely inwards to ist interos- 

 seous space, inosc. with communicating branch from dorsalis 

 peclis, forming plantar arch. Perforates pOSterlo'reS : (3); ascend 

 through back part of the 3 outer intcrosscous spaces J anas. 

 with interosseous branches of metatarsal. Digita'.GS : (4) ; arise 

 from arch and supply both sides of the 3 outer toes and outer 

 side of the 2d toe, bifurcating at the respective toe-clefts to do 

 this. At each bifurcation a branch (the anterior perforating) 

 is sent upwards through the interosseous space ; anas, with 

 interosseous branches of the metatarsal. 



VEINS. 



Sapho'na inter'ni, or long saphenous : from plexus at dorsum 

 and inner side of foot, ascends, in front of inner ankle, be- 

 hind inner margin of tibia, bends behind inner femuric con- 

 dyle, empties into femoral through saphenous opening, \y z 

 inches below Poupart's ligament, where it receives superficia- 

 'Us circumflex' a il?aca t superficia'lis epigas'trica, and super- 

 ficia'lis exter'na pudi'ca. Communicates with internal plan- 

 tar, tibial, etc. 2 6 valves. 



Saphe'aa c xter'm : plexus at dorsum and outer side of foot, 

 up behind outer ankle to median line of leg, accompanied by 

 external saphenous nerve; empties, into poplite,.! vein, be- 

 tween heads of gastrocnemius. 2 valves, one near termina- 

 tion. Communicates with deep veins of foot. 



Tibia'lS3 po.terio'res: formed from external and internal 

 plantar joining with the peroneal. Course same as artery. 



Tib. lies cnerio'res: continuation oivc'nce dorsa'les pe t dis t 

 pierce interosseous membrane at upper part of leg, and form, 

 by junction with the posterior tibial veins, the popliteal. 



Poplitx'a: (see tibial anterior) up to tendinous aperture of 

 adductor magnus, there becoming the femoral; receives 

 fural, articrtlar, and external sapJienous veins. 4 valves. 

 Crosses artery from within outwards. 



Femoralis: (see above); up to Poupart's ligament, there 

 becoming external iliac. Lies (below) to outside, but crosses 

 beneath the artery to its inside. Receives muscular branches, 

 &D.&profun'dajfemo'ris t and internal sapJienoiis at i% inches 

 below Poupart's ligament. 4 or 5 valves. 



QSter'na : (see above) ; to sacro-iliac symphysis, there 



