Compare the venous system in the arm and the leg.
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Compare the venous system in the arm and the leg. The venous system of the arm and the leg have many parallels in both superficial anatomy and functionality. Arterial blood flows through the main axial arteries to the upper and lower limbs. It returns via the deep and superficial veins. In the upper limb the superficial veins are more important in carrying blood back to the heart. In the lower limb, the superficial veins carry only about 10 per cent of the blood, while the remainder passes via the deep veins. The superficial veins lie superficial to the muscle fascia of the limb. The principal superficial veins in the leg are the great and small saphenous veins. In the arm, the cephalic and basilic veins are the principal superficial veins. The subcutaneous connective tissue of the thigh, including that over certain bones and prominences, constitutes fascia of the thigh. The...


