The largest vein in the human body is

Last Updated: 26 Jun 2026

This question examines a fundamental concept of human anatomy, physiology, health, nutrition, disease, or body regulation that frequently appears in SSC CGL General Science. The human body works through coordinated organ systems. A familiar word is not automatically correct; qualifiers such as “largest,” “primary,” “deficiency,” “secreted by,” “carries,” or “controls” determine the answer. Restate the question in your own words, predict the answer before checking the options, and confirm that the explanation and correct-option field both point to Inferior vena cava.

APulmonary vein

BSuperior vena cava

CInferior vena cava

DPortal vein

Correct Answer: Inferior vena cavaYour Answer: C

Explanation

Therefore option C, Inferior vena cava, is factually consistent with the stem, the marked correct index, and the explanation.✅ 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. Pulmonary vein — Pulmonary veins carry oxygenated blood from the lungs to the left atrium; they are not the largest veins. Superior vena cava — Superior vena cava (SVC) carries blood from upper body (head, arms, chest) to the heart; smaller than IVC. 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).

Important Notes

rior vena cava, corresponding to option C. The answer field, correct index, and both explanations must remain aligned.
Read the complete stem and identify the exact demand: organ, gland, hormone, cell, tissue, nutrient, enzyme, pathogen, vector, deficiency disease, body fluid, or physiological function.
Pulmonary vein, Superior vena cava, Portal vein are eliminated here because none satisfies the precise requirement of the stem. Practising the reason for each rejection is more reliable than memorising only the correct choice.
Numerical biological facts often vary with age, sex, body size, and reference range. Use the standard approximate value expected in school-level competitive examinations and retain its unit.

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FAQ

SSC CGL Human Body FAQs

Common questions and clear answers for this topic.

Which body systems are most important for SSC CGL preparation?

The digestive, circulatory, nervous, and skeletal systems appear most frequently, along with sensory organs and basic endocrine functions.

How many bones are there in the human body, and is this commonly asked?

Yes, the human body has 206 bones, and questions about the largest, smallest, and total bone count appear fairly often.

What kind of blood-related questions come up in SSC CGL?

Questions usually cover blood group compatibility, the role of platelets in clotting, and basic facts about blood pressure and heart function.

Do I need detailed biochemistry knowledge for the human body section?

No, most questions focus on what each organ does and why, rather than the detailed biochemical processes behind it.

How can I retain human body facts more effectively for the exam?

Linking facts to real-life observations, like why pulse is checked at the wrist, makes them easier to recall than memorizing textbook lines.

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