Question

difference between superior Vena cava and inferior Vena cava

Answer 1

• Superior vena cava brings deoxygenated blood from the upper limbs, head, and neck, whereas inferior vena cava brings deoxygenated blood from lower limbs, gonads, kidneys and liver.

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• Inferior vena cava is larger and longer than superior vena cava (diameter about 2 cm and length about 7 cm).

• Veins draining into the superior vena cava include radial and ulnar veins, brachial vein, axillary vein, cephalic vein, basilica vein, median cubital vein, subclavian vein, external jugular vein, vertebral vein, internal jugular vein and brachiocephalic veins. In contrast, veins draining into the inferior vena cava are anterior and posterior tibial veins, fibular vein, popliteal vein, femoral vein, external iliac vein, great saphenous veins, common iliac vein, external and internal iliac vein, renal vein, hepatic portal vein, and hepatic veins.

• Inferior vena cava begins below the heart, whereas superior vena cava begins above the heart.

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