SSC CGL
MediumQ. No. the-largest-vein-in-the-human-body-is
The largest vein in the human body is
Last Updated:
APulmonary vein
BSuperior vena cava
CInferior vena cava
DPortal vein
Correct Answer: Inferior vena cavaYour Answer: C
✅ Correct Answer: C — Inferior vena cava
The Inferior Vena Cava (IVC) is the largest vein in the human body. It collects deoxygenated blood from all body parts below the diaphragm (lower limbs, abdomen, pelvis) and carries it to the right atrium of the heart. Its large diameter accommodates the massive blood flow from the lower body.
❌ Why other options are wrong:
• A. Pulmonary vein — Pulmonary veins carry oxygenated blood from the lungs to the left atrium; they are not the largest veins.
• B. Superior vena cava — Superior vena cava (SVC) carries blood from upper body (head, arms, chest) to the heart; smaller than IVC.
• D. Portal vein — Portal vein carries nutrient-rich blood from digestive organs to the liver; not the largest vein.
📝 Important Note: Largest vein = Inferior Vena Cava (IVC). Largest artery = Aorta. Veins carry deoxygenated blood (except pulmonary veins). Arteries carry oxygenated blood (except pulmonary arteries). IVC is about 2-3 cm in diameter. A key SSC CGL cardiovascular question.
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