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CHAPTER 20 | THE CARDIOVASCULAR SYSTEM: BLOOD VESSELS AND CIRCULATION887Download for free at .
Figure 20.34 Systemic Arteries of the Lower LimbThe flow chart summarizes the distribution of the systemicarteries from the external iliac artery into the lower limb.Arteries Serving the Lower LimbsVesselDescriptionFemoral arteryContinuation of the external iliac artery after it passes through the body cavity; divides intoseveral smaller branches, the lateral deep femoral artery, and the genicular artery; becomesthe popliteal artery as it passes posterior to the kneeDeep femoralarteryBranch of the femoral artery; gives rise to the lateral circumflex arteriesLateralcircumflexarteryBranch of the deep femoral artery; supplies blood to the deep muscles of the thigh and theventral and lateral regions of the integumentGenicular arteryBranch of the femoral artery; supplies blood to the region of the kneePopliteal arteryContinuation of the femoral artery posterior to the knee; branches into the anterior andposterior tibial arteriesAnterior tibialarteryBranches from the popliteal artery; supplies blood to the anterior tibial region; becomes thedorsalis pedis arteryTable 20.10888CHAPTER 20 | THE CARDIOVASCULAR SYSTEM: BLOOD VESSELS AND CIRCULATIONThis content is available for free at
Arteries Serving the Lower LimbsVesselDescriptionDorsalis pedisarteryForms from the anterior tibial artery; branches repeatedly to supply blood to the tarsal anddorsal regions of the footPosterior tibialarteryBranches from the popliteal artery and gives rise to the fibular or peroneal artery; suppliesblood to the posterior tibial regionMedial plantararteryArises from the bifurcation of the posterior tibial arteries; supplies blood to the medial plantarsurfaces of the footLateral plantararteryArises from the bifurcation of the posterior tibial arteries; supplies blood to the lateral plantarsurfaces of the footDorsal orarcuate archFormed from the anastomosis of the dorsalis pedis artery and the medial and plantararteries; branches supply the distal portions of the foot and digitsPlantar archFormed from the anastomosis of the dorsalis pedis artery and the medial and plantararteries; branches supply the distal portions of the foot and digitsTable 20.10Overview of Systemic VeinsSystemic veins return blood to the right atrium. Since the blood has already passed through the systemic capillaries, it willbe relatively low in oxygen concentration. In many cases, there will be veins draining organs and regions of the body withthe same name as the arteries that supplied these regions and the two often parallel one another. This is often described asa “complementary” pattern. However, there is a great deal more variability in the venous circulation than normally occursin the arteries. For the sake of brevity and clarity, this text will discuss only the most commonly encountered patterns.