CHAPTER 20 THE CARDIOVASCULAR SYSTEM BLOOD VESSELS AND CIRCULATION 887 Download

Chapter 20 the cardiovascular system blood vessels

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CHAPTER 20 | THE CARDIOVASCULAR SYSTEM: BLOOD VESSELS AND CIRCULATION 887 Download for free at .
Figure 20.34 Systemic Arteries of the Lower Limb The flow chart summarizes the distribution of the systemic arteries from the external iliac artery into the lower limb. Arteries Serving the Lower Limbs Vessel Description Femoral artery Continuation of the external iliac artery after it passes through the body cavity; divides into several smaller branches, the lateral deep femoral artery, and the genicular artery; becomes the popliteal artery as it passes posterior to the knee Deep femoral artery Branch of the femoral artery; gives rise to the lateral circumflex arteries Lateral circumflex artery Branch of the deep femoral artery; supplies blood to the deep muscles of the thigh and the ventral and lateral regions of the integument Genicular artery Branch of the femoral artery; supplies blood to the region of the knee Popliteal artery Continuation of the femoral artery posterior to the knee; branches into the anterior and posterior tibial arteries Anterior tibial artery Branches from the popliteal artery; supplies blood to the anterior tibial region; becomes the dorsalis pedis artery Table 20.10 888 CHAPTER 20 | THE CARDIOVASCULAR SYSTEM: BLOOD VESSELS AND CIRCULATION This content is available for free at
Arteries Serving the Lower Limbs Vessel Description Dorsalis pedis artery Forms from the anterior tibial artery; branches repeatedly to supply blood to the tarsal and dorsal regions of the foot Posterior tibial artery Branches from the popliteal artery and gives rise to the fibular or peroneal artery; supplies blood to the posterior tibial region Medial plantar artery Arises from the bifurcation of the posterior tibial arteries; supplies blood to the medial plantar surfaces of the foot Lateral plantar artery Arises from the bifurcation of the posterior tibial arteries; supplies blood to the lateral plantar surfaces of the foot Dorsal or arcuate arch Formed from the anastomosis of the dorsalis pedis artery and the medial and plantar arteries; branches supply the distal portions of the foot and digits Plantar arch Formed from the anastomosis of the dorsalis pedis artery and the medial and plantar arteries; branches supply the distal portions of the foot and digits Table 20.10 Overview of Systemic Veins Systemic veins return blood to the right atrium. Since the blood has already passed through the systemic capillaries, it will be relatively low in oxygen concentration. In many cases, there will be veins draining organs and regions of the body with the same name as the arteries that supplied these regions and the two often parallel one another. This is often described as a “complementary” pattern. However, there is a great deal more variability in the venous circulation than normally occurs in the arteries. For the sake of brevity and clarity, this text will discuss only the most commonly encountered patterns.

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