Body Fluids and Circulation NEET Questions 2024

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Body fluids play a vital role in circulation within the human body. Blood, a major body fluid, transports oxygen, nutrients, hormones, and waste products. It circulates through a network of blood vessels, including arteries, veins, and capillaries. The heart serves as the central pump that propels blood throughout the body. Lymph, another body fluid, helps maintain fluid balance and immunity. The proper circulation of body fluids ensures the delivery of essential substances and the removal of waste, supporting overall health and function.

NEET Questions – Chapter 18 – Body Fluids and Circulation

Here are some MCQs related to the Body Fluids and Circulation for the NEET exam:

1. Which of the following is the fluid component of blood?

1. Plasma
2. Serum
3. Lymph
4. Cerebrospinal fluid

Answer: a. Plasma

2. Which of the following is not a function of blood?

1. Transport of nutrients and gases
2. Maintenance of body temperature
3. Protection against infection
4. Production of enzymes and hormones

Answer: d. Production of enzymes and hormones

3. Which of the following is not a component of the cardiovascular system?

1. Heart
2. Blood vessels
3. Lungs
4. Blood

Answer: c. Lungs

4. Which of the following is the smallest blood vessel in the body?

a. Vein

b. Artery

c. Capillary

d. Aorta

Answer: c. Capillary

5. Which of the following is not a type of blood vessel?

a. Vein

b. Artery

c. Capillary

d. Lymphatic vessel

Answer: d. Lymphatic vessel

6. Which of the following is the correct sequence of blood flow through the heart?

a. Right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left atrium, left ventricle, aorta

b. Right atrium, left atrium, right ventricle, left ventricle, pulmonary artery, lungs, pulmonary vein, aorta

c. Left atrium, left ventricle, pulmonary vein, lungs, pulmonary artery, right atrium, right ventricle, aorta

d. Left atrium, right atrium, left ventricle, right ventricle, pulmonary vein, lungs, pulmonary artery, aorta

Answer: a. Right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left atrium, left ventricle, aorta

7. Which of the following is the correct sequence of events during the cardiac cycle?

a. Atrial systole, ventricular systole, isovolumetric relaxation, ventricular diastole

b. Ventricular diastole, atrial systole, ventricular systole, isovolumetric relaxation

c. Isovolumetric relaxation, atrial systole, ventricular diastole, ventricular systole

d. Ventricular systole, atrial systole, isovolumetric relaxation, ventricular diastole

Answer: a. Atrial systole, ventricular systole, isovolumetric relaxation, ventricular diastole

8. Which of the following is the hormone responsible for regulating blood pressure and volume?

a. Aldosterone

b. Antidiuretic hormone

c. Angiotensin II

d. Atrial natriuretic peptide

Answer: c. Angiotensin II

9. Which of the following is the main function of the lymphatic system?

a. Transport of oxygen and nutrients to tissues

b. Removal of waste products from tissues

c. Protection against infection

d. Regulation of blood pressure

Answer: c. Protection against infection

10. Which of the following is the term used to describe the force exerted by blood against the walls of blood vessels?

a. Blood pressure

b. Heart rate

c. Stroke volume

d. Cardiac output

Answer: a. Blood pressure

11: Which of the following is responsible for the transport of oxygen in the human body?

1. A) White blood cells
2. B) Platelets
3. C) Red blood cells
4. D) Plasma

Answer 1: C) Red blood cells

12. Which of the following chambers of the heart pumps oxygenated blood to the systemic circulation?

1. A) Right atrium
2. B) Right ventricle
3. C) Left atrium
4. D) Left ventricle

Answer 2: D) Left ventricle

13. Which blood vessel carries oxygenated blood away from the heart to the body tissues?

1. A) Vein
2. B) Artery
3. C) Capillary
4. D) Venules

Answer 3: B) Artery

14. What is the main component of blood plasma?

1. A) Red blood cells
2. B) White blood cells
3. C) Water
4. D) Platelets

Answer 4: C) Water

15. Which of the following helps in the clotting of blood?

1. A) Hemoglobin
2. B) Albumin
3. C) Fibrinogen
4. D) Globulin

Answer 5: C) Fibrinogen

16. Which of the following chambers of the heart receives deoxygenated blood from the body?

1. A) Right atrium
2. B) Right ventricle
3. C) Left atrium
4. D) Left ventricle

Answer 6: A) Right atrium

17. Which blood vessel has the thinnest walls and is responsible for the exchange of nutrients and gases between blood and tissues?

1. A) Artery
2. B) Vein
3. C) Capillary
4. D) Venules

Answer 7: C) Capillary

18. What is the average adult human blood volume (in liters)?

1. A) 2-3 liters
2. B) 5-6 liters
3. C) 8-9 liters
4. D) 12-13 liters

Answer 8: B) 5-6 liters

19. Which of the following factors is responsible for blood pressure?

1. A) Cardiac output and peripheral resistance
2. B) Blood viscosity and heart rate
3. C) Stroke volume and blood volume
4. D) Heart rate and blood viscosity

Answer 9: A) Cardiac output and peripheral resistance

20. What is the role of lymphatic vessels in the circulatory system?

1. A) Transport oxygen to body tissues
2. B) Remove carbon dioxide from the body
3. C) Drain excess tissue fluid and return it to the bloodstream
4. D) Carry hormones from glands to target organs

Answer 10: C) Drain excess tissue fluid and return it to the bloodstream

21. Which of the following components is responsible for the clotting of blood? 

1. A) Platelets 
2. B) Red blood cells
3. C) White blood cells 
4. D) Plasma 

Answer 1: A) Platelets

22. What is the primary function of hemoglobin in blood? 

1. A) Transport of oxygen 
2. B) Immune response 
3. C) Blood clotting 
4. D) Nutrient absorption 

Answer 2: A) Transport of oxygen

23. In which blood vessel does the exchange of gases occur in the circulatory system? 

1. A) Veins 
2. B) Arteries 
3. C) Capillaries 
4. D) Aorta 

Answer 3: C) Capillaries

24. Which of the following hormones is responsible for regulating blood glucose levels? 

1. A) Insulin 
2. B) Thyroxine 
3. C) Estrogen 
4. D) Testosterone

Answer 4: A) Insulin

25. What is the main function of lymphatic vessels in the circulatory system? 

1. A) Pumping blood to the body 
2. B) Transporting oxygen 
3. C) Draining excess tissue fluid and immune defense 
4. D) Carrying nutrients to cells 

Answer 5: C) Draining excess tissue fluid and immune defense