Body Fluids and Circulation — NEET 2027 | 3–4 Questions Per Exam, Free Bilingual Practice

Free Body Fluids and Circulation MCQs for NEET 2027 — the newest ReNEET 2026-style reasoning questions and every question format, each with an instant NCERT-referenced solution. No login.

392+ questionsReNEET 2026 styleFree · no loginClass 11

How many questions from Body Fluids and Circulation in NEET?

3–4 questions from Body Fluids and Circulation appear in NEET every year (12–16 marks, ~4% of NEET Biology). High-yield topics: cardiac cycle, double circulation, blood composition (plasma vs formed elements), lymph and tissue fluid, ECG waves, and circulatory disorders (hypertension, coronary artery disease). Practise all 430 Body Fluids PYQs free in bilingual Hindi & English in the MedicNEET app.

36
NEET PYQs (2016–26)
2.4
Avg Qs / year
392+
Practice questions
Class 11
Human Physiology

Year-wise NEET Questions — Body Fluids and Circulation

YearQuestionsMarks
NEET 2016312
NEET 2017416
NEET 201828
NEET 2019520
NEET 2020312
NEET 2021416
NEET 202228
NEET 2023520
NEET 2024312
NEET 202528
NEET 2026624

Practise Body Fluids and Circulation MCQs — Free

Every Body Fluids and Circulation question format NEET uses, starting with the newest ReNEET 2026-style reasoning MCQs. Tap an option for the answer + NCERT explanation.

✨ Body Fluids and Circulation — ReNEET 2026-Style Reasoning Questions

The newest, most exam-current format — reasoning-based questions modelled on ReNEET 2026. This is where NEET is heading; practise the pattern before the exam does.

  1. Q1. How do granulocytes differ from agranulocytes?
  2. Q2. Why does plasma help in maintaining blood pressure and volume?
  3. Q3. What explains the return of lymph to the main venous system?
  4. Q4. Which of the following best describes lacteals?
  5. Q5. How do semilunar valves help in circulation?
  6. Q6. What causes the closure of AV valves during the cardiac cycle?
  7. Q7. Why does systemic circulation require higher pressure than pulmonary circulation?
  8. Q8. What is the role of parasympathetic signals in heart regulation?
  9. Q9. What is the role of the neural center located in the medulla oblongata?
  10. Q10. Hypertension is clinically defined as blood pressure:

You’ve practised 10 of 61 Body Fluids and Circulation questions in this set.

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📑 Body Fluids and Circulation — NEET 2025 & 2026 Long-Form MCQs

The long, multi-statement questions that dominated NEET 2025 & 2026 — each covers 5-6 concepts at once, so they double as fast full-chapter revision.

  1. Q1. Which of the following statements regarding formed elements of blood are NOT correct? S1: Erythrocytes in most mammals are nucleated and have a biconcave shape. S2: Haemoglobin, an iron-containing complex protein, is present in leucocytes and helps in oxygen transport. S3: The average lifespan of an RBC is 120 days, after which it is destroyed in the spleen. S4: Thrombocytes are cell fragments produced from megakaryocytes and are involved in blood coagulation. S5: Neutrophils are the least abundant leucocytes, comprising 0.5-1% of the total WBCs.
  2. Q2. Which of the following statements regarding lymph and the lymphatic system are NOT correct? S1: Lymph is a colourless fluid formed from blood plasma that has leaked out of capillaries, lacking erythrocytes but containing specialised lymphocytes. S2: The mineral distribution in lymph is significantly different from that of blood plasma, and it contains a higher concentration of proteins. S3: The lymphatic system primarily functions to drain interstitial fluid back into major veins and to absorb digested fats via lacteals. S4: Lymphocytes within the lymph are specialized cells primarily responsible for initiating coagulation and inflammatory reactions. S5: While lymph transports nutrients and hormones, it plays a major role in the direct transport of oxygen to tissues, similar to blood.
  3. Q3. Which of the following statements are correct regarding the human circulatory system? S1: The pulmonary circulation is responsible for transporting deoxygenated blood from the right ventricle to the lungs and returning oxygenated blood to the left atrium. S2: Systemic circulation ensures the delivery of oxygen and nutrients to body tissues, while removing carbon dioxide and other harmful substances. S3: All arteries consistently carry oxygenated blood, whereas all veins invariably transport deoxygenated blood in humans. S4: The hepatic portal system directly conveys nutrient-rich blood from the digestive tract into the right atrium of the heart. S5: Double circulation in mammals involves a single ventricle where oxygenated and deoxygenated blood partially mix.
  4. Q4. Which of the following statements accurately describe the intrinsic and extrinsic regulation of the human heart? S1. The human heart is characterized as myogenic because its rhythmic contractile activity is initiated by specialized nodal musculature within the heart itself. S2. While the heart is myogenic, its auto-excitability rate is entirely independent of any neural or hormonal modulation. S3. The medulla oblongata acts as the primary pacemaker of the heart, generating the intrinsic electrical impulses that regulate the heart beat. S4. Nodal tissue, essential for the heart's intrinsic activity, is distributed throughout the heart, including the sino-atrial node (SAN) located in the right upper corner of the right atrium. S5. The heart's ability to beat outside the body for a short period is a direct consequence of its auto-excitable property.

You’ve practised 4 of 60 Body Fluids and Circulation questions in this set.

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🧩 Body Fluids and Circulation — All-Format Questions — Match, Assertion-Reason, Statement & Image-Based

Every question format NEET uses — match-the-column, assertion-reason, statement-based, and image/diagram questions — not just plain MCQs. Each with an instant NCERT-referenced solution.

  1. Q1. The figure shows four different ECG tracings (A–D). Identify the normal ECG pattern.
    NEET question diagram
  2. Q2. Identify the cause of wave P in the ECG shown in Figure
    NEET question diagram
  3. Q3. (A) Arrange the ECG events in the correct sequence during a cardiac cycle: 1. QRS complex – ventricular depolarisation, systole begins 2. P-wave – atrial depolarisation, atrial contraction 3. T-wave – ventricular repolarisation, systole ends (B) Match the terms with their values/definitions: Column I A. Stroke Volume B. Cardiac Output Column II i. 70 mL blood pumped per ventricle per beat ii. ~5000 mL blood pumped per ventricle per minute
  4. Q4. Match the constituents of plasma (Column I) with their major functions (Column II): Column I A. Fibrinogen B. Globulins C. Albumins D. Minerals (Na⁺, Ca²⁺, HCO₃⁻, etc.) Column II i. Osmotic balance ii. Clotting of blood iii. Defense mechanisms iv. Maintain ionic composition
  5. Q5. Assertion (A): RBCs in mammals lack nuclei to accommodate more haemoglobin. Reason (R): Presence of nucleus in RBCs helps in faster oxygen transport.
  6. Q6. Assertion (A): Fibrinogen is converted to fibrin during clotting. Reason (R): Heparin converts fibrinogen to fibrin.
  7. Q7. Arrange the following events in the correct sequence to explain the mechanism of erythroblastosis foetalis: A. In a later pregnancy, maternal anti-Rh antibodies cross into the foetal circulation. B. Rh–ve mother carries an Rh⁺ foetus. C. At first delivery, small amounts of foetal Rh⁺ blood may enter maternal blood. D. Mother forms antibodies against Rh antigen. E. Foetal RBCs are destroyed, leading to anaemia/jaundice.
  8. Q8. Arrange the steps of blood coagulation in correct order: A. Fibrinogen → Fibrin B. Platelets release factors C. Clot forms trapping cells D. Prothrombin → Thrombin (with Ca²⁺, thrombokinase) E. Enzymatic cascade begins
  9. Q9. Arrange the following events of the cardiac cycle in correct sequence: A. Ventricular systole begins, AV valves close B. Joint diastole: all four chambers relaxed C. Atrial systole pushes extra blood into ventricles D. Semilunar valves open, blood flows into aorta/pulmonary artery E. Ventricular diastole, semilunar valves close
  10. Q10. Consider the following statements: 1. Normal activities of the heart are intrinsically regulated by specialised muscles, hence the heart is myogenic. 2. Sympathetic neural signals increase heart rate and cardiac output, while parasympathetic signals decrease them. 3. Adrenal medullary hormones can also elevate cardiac output. 4. Hypertension is diagnosed if repeated blood pressure checks show 140/90 mm Hg or higher. 5. Coronary artery disease (CAD) results from narrowing of arteries due to calcium, fat, cholesterol, and fibrous deposits. Choose the correct option:

You’ve practised 10 of 271 Body Fluids and Circulation questions in this set.

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Sample NEET PYQs — Body Fluids and Circulation

NEET 2016 — Q1

Blood pressure in the pulmonary artery is:

  1. A. Same as that in the aorta
  2. B. More than that in the carotid
  3. C. More than that in the pulmonary vein
  4. D. Less than that in the venae cavae

Explanation: Answer: (c) More than that in the pulmonary vein Solution: Blood pressure always falls along the vascular route from artery to vein. The deoxygenated blood pumped by the right ventricle enters the pulmonary artery at higher pressure, passes to the lungs, and is then carried at lower pressure by the pulmonary veins to the left atrium. So pressure in the pulmonary artery is greater than in the pulmonary vein. NCERT: Ch 15, p.201, line 37 — "The deoxygenated blood pumped into the pulmonary artery is passed on to the lungs"

NEET 2016 — Q2

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.

  1. A. Erythrocytes
  2. B. Leucocytes
  3. C. Neutrophils
  4. D. Thrombocytes

Explanation: Answer: (d) Thrombocytes Solution: Platelets, also called thrombocytes, release substances involved in the coagulation or clotting of blood. A reduction in their number leads to clotting disorders, causing excessive loss of blood from the body. NCERT: Ch 15, p.195, line 10 — "A reduction in their number can lead to clotting disorders"

NEET 2016 — Q3

Serum differs from blood in

  1. A. Lacking globulins
  2. B. Lacking albumins
  3. C. Lacking clotting factors
  4. D. Lacking antibodies

Explanation: Answer: (c) Lacking clotting factors Solution: Plasma contains clotting (coagulation) factors in an inactive form. When these clotting factors are removed, the remaining fluid is called serum. Hence serum differs from blood (plasma) in lacking the clotting factors. NCERT: Ch 15, p.194, line 10 — "Plasma without the clotting factors is called serum."

NEET 2017 — Q4

The hepatic portal vein drains blood to liver from

  1. A. Heart
  2. B. Stomach
  3. C. Kidneys
  4. D. Intestine

Explanation: Answer: (d) Intestine Solution: The hepatic portal system is a unique vascular connection between the digestive tract and the liver. The hepatic portal vein carries blood from the intestine to the liver before it is delivered to the systemic circulation. NCERT: Ch 15, p.202, line 3 — "The hepatic portal vein carries blood from intestine to the liver"

Frequently Asked Questions — Body Fluids and Circulation NEET

How many questions from Body Fluids and Circulation come in NEET?+
3–4 questions from Body Fluids and Circulation appear in NEET every year (12–16 marks, approximately 4% of NEET Biology). High-yield topics include cardiac cycle, double circulation, blood composition, lymph, ECG waves, and circulatory disorders like hypertension.
How many Body Fluids and Circulation questions does MedicNEET have?+
MedicNEET has 430 questions for Body Fluids and Circulation, including 315 MCQs, 40 Assertion-Reason questions, and 75 NEET 2025-style long-form questions. All questions are available free in bilingual Hindi and English in the MedicNEET app.
What is the NEET weightage of Body Fluids and Circulation?+
Body Fluids and Circulation carries approximately 4% weightage in NEET (12–16 marks per exam), based on analysis of the last 10 years of papers. It falls under the Human Physiology unit of Class 11 Biology.
Are Body Fluids and Circulation questions available in Hindi?+
Yes. All 430 Body Fluids and Circulation questions in the MedicNEET app are bilingual — available in both Hindi and English. You can switch language anytime during practice.
Are Body Fluids and Circulation questions NCERT-based?+
Yes, all MedicNEET Body Fluids and Circulation questions are built from line-by-line analysis of NCERT Class 11 textbook. Every question maps to specific NCERT pages and concepts.
Which animals have a 2-chambered heart?+
Fish have a 2-chambered heart, consisting of one auricle (atrium) and one ventricle. Blood passes through the heart once per circuit (single circulation). All bony fish (Osteichthyes) and cartilaginous fish (Chondrichthyes) follow this pattern.
Which animals have a 3-chambered heart?+
Amphibians (frogs, toads, salamanders) and most reptiles (lizards, snakes, turtles) have a 3-chambered heart — two auricles and one ventricle. The single ventricle allows some mixing of oxygenated and deoxygenated blood.
Which animals have a 4-chambered heart?+
Birds, mammals, and crocodiles have a 4-chambered heart (two auricles + two ventricles), enabling complete separation of oxygenated and deoxygenated blood (double circulation). Crocodile is the only reptile with a 4-chambered heart — a key NEET exception.
Which reptile has a 4-chambered heart?+
Crocodile (Crocodilia) is the only reptile with a 4-chambered heart. All other reptiles — lizards, snakes, and turtles — have a 3-chambered heart. This exception is a frequently tested NEET fact under Body Fluids and Circulation.
What are ReNEET 2026-style reasoning Body Fluids and Circulation questions?+
Reasoning-based Body Fluids and Circulation questions modelled on the ReNEET 2026 pattern — the newest, most exam-current format. NEET is shifting from recall toward reasoning, so these are the highest-value Body Fluids and Circulation MCQs to practise for NEET 2027. You can practise them free on this page.
Are these Body Fluids and Circulation MCQs free to practise?+
Yes. Every Body Fluids and Circulation question on this page is free with no login — pick an option and the correct answer plus an NCERT-referenced explanation appear instantly. For all 392+ Body Fluids and Circulation questions and every other chapter, use the free MedicNEET app.

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