ARTERIES OF THE LOWER EXTREMITY. 309 



10. The Femoral Artery, where it lies betwixt the triceps and vastus in- 



ternus muscle, before it perforates the triceps.* 

 ll,f 12, 13. Articular Arteries, branches of the Popliteal Artery. 



14. The Anterior Tibial Artery % 



15. The Reflected Branch of the Anterior Tibial Artery. 



16. The Anterior Tibial Artery, continuing its course, and distributing 

 small branches to the surrounding muscles. 



17. At this part it passes under the Annular Ligament. 



18. The Internal Malleolar Artery. 



19. The External Malleolar Artery. 



20. The Tar sal Artery. 



21. The Anterior Tibial Artery descending on the fore part of the foot* 



22. The part at which the Anterior Tibial Artery sinks into the sole of the 

 foot, forming communications with the Plantar Arteries. 



23. The last branch of the Anterior Tibial Artery, the Arteria Dorsahs 

 Pollicis. 



* Femoral Artery. This artery, near the place of its perforating the triceps, 

 is the subject of one of the most important surgical operations for popliteal 

 aneurism. In dissection it may be well to make this experiment : Place a 

 string so as to reach from the superior spine of the os ilii to the promi- 

 nent part of the inner condyle ; mark the middle of the string ; make an inci- 

 sion a very little towards the inside of it, in the direction of the string ; first, 

 you come to the sartorious muscle ; next, laying that aside, to a fascia, which 

 stretches from the triceps to the vastus internus ; when this is slit up you may 

 see the artery ; observe its situation in regard to the vein, the nervus longus, and 

 the sheath which, surrounds it. 



f This branch (the first perforating branch of the Popliteal Artery) is remark- 

 ably enlarged in Popliteal Aneurism. 



$ The Anterior Tibial Artery lies so under the projection of the Tibia, that it 

 is not often wounded ; yet it may be cut by a deep wound, and the student 

 should observe how it lies under the fascia and muscles. 



" The Anterior Tibial Artery comes through betwixt the bones, one inch be- 

 low the projection of the knob of the Fibula ; we then cut by the edge of the 

 Peroneus Longus, and follow the partition fascia, which is betwixt this muscle 

 and the head of the .Extensor Digitorum Communis. This partition carries us 

 deep, and we find the artery lying on the interosseous ligament." 



When the artery is to be tied lower down, after slitting up the fascia, we 

 must cut betwixt the Tibialis Antictis, and Extensor Pollicis. 



