Veins of the Leg. 



471 



508. Superficial 

 veins of the 

 right thigh, 



viewed from in front. 



(The arrows indicate the way 



the current is directed by the 



valves.) 



In the plexus of superficial 

 veins of the leg two large 

 venous trunks stand out above 

 the foot, the v. saphena mag-na 

 and the v. saphena parva, of 

 which the latter belongs es- 

 sentially to the leg aLme. 



T. sapheua magna (see 

 also Figs. 505 and 507) begins 

 in front of the medial mal- 

 leolus as the continuation of 

 the V. marginalis medialis 

 and there receives superficial 

 branches fi'om the rete veno- 

 sum plantare cutaneum and 

 deep branches fifom the vv. plan- 

 tares mediales. It then runs 

 almost vertically upward upon 

 the facies medialis tibiae, makes 

 a slight curve behind the con- 

 dyli mediales of tlie tibia and 

 femur and then goes fairly 

 straight but obliquely upward 

 on the medial and anterior 

 surface of the thigh, and enters 

 the anterior medial waU of the 

 V. femoralis in the fossa ovalis. 

 In its entire course it is sit- 

 uated subcutaneously upon 

 the fascia cruris and fascia 

 lata. On its way it receives 

 numerous In-anches frum the 

 superficial networks of the 

 heel, of the leg and of the 

 thigh, as well as veins from 

 the tibia, and anastomoses 

 manifoldly with the v. saphena 

 parva. The superficial veins 

 coming from the back of the 

 thigh often form a separate 

 trunk, the v. saphena acces- 

 soria (not illustrated), which 

 accompanies the v. saphena 

 magna medianward at a vari- 

 able distance from it and 

 empties intc it at an incon- 

 stant level. 



V. ciicuniflexa ilium 

 superficialis 



V. epigastrica 

 / superficialis 



Fossa ovalis 



Vv. pudendae 

 extern ae 



A. pudenda 

 externa 



Vv. dorsales 

 penis cutaneae 



V. scrotalis 

 anterior 



V. dorsalis 

 penis 



V. saphena 

 magna 



Patella 



