Body Fluids and Circulation NEET PYQs (1993–2026)

Solved Body Fluids and Circulation PYQs

3 recent questions with answers. The full set of 98 is free to practise.

1. NEET NAHardCardiac Activity
   Q1

   Which one of the following statements is correct?

   • AThe atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
   • BThe tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
   • CBlood moves freely from atrium to the ventricle during joint diastole.
   • DIncreased ventricular pressure causes closing of the semilunar valves.

   Show answer & solution

   Correct answer: (C)

   Solution:
   
   Option (3) is the correct answer because during joint diastole, blood moves freely from atrium to ventricle as atrioventricular valve remain open during joint diastole.
   
   Option (4) is incorrect because decrease in ventricular pressure, during ventricular diastole closes semilunar valves to produce 'dub' heart sound.
   
   Option (1) is incorrect because SA node generates action potential to stimulate atrial contraction.
   Option (2) is incorrect because bicuspid and tricuspid valves open due to pressure exerted by blood present in atria and decrease in pressure in ventricles during ventricular diastole.
2. NEET 2026HardBlood
   Q2

   The WBC count of a person's blood sample is 8000/cu mm. How many eosinophils and lymphocytes would be in the same blood sample approximately?

   • A300-500/cu mm and 1200-1500/cu mm respectively
   • B160-240/cu mm and 1600-2000/cu mm respectively
   • C300-500/cu mm and 500-700/cu mm respectively
   • D100-120/cu mm and 160-200/cu mm respectively

   Show answer & solution

   Correct answer: (B)

   Eosinophils 2-3% of 8000 = 160-240; Lymphocytes 20-25% of 8000 = 1600-2000.
3. NEET 2025MediumCirculatory Pathways
   Q3

   What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog? NEET 2025

   • APulmonary vein
   • BVena cava
   • CAorta
   • DPulmonary artery

   Show answer & solution

   Correct answer: (B)

   Frog's heart is a muscular structure with three chambers. It receives deoxygenated blood from body parts through the major veins called vena cava. Vena cava carries deoxygenated blood. Aorta and pulmonary vein carries oxygenated blood. Whereas, pulmonary artery will carry deoxygenated blood towards the lungs.

Topic-wise question count

Where NEET has asked from Body Fluids and Circulation, most frequent first.

• Blood45
• Cardiac Activity28
• Circulatory Pathways17
• Lymph (Tissue Fluid)4
• Disorders of the Circulatory System2
• Double Circulation1
• Blood / Circulatory Pathways1

Year-wise Body Fluids and Circulation questions in NEET

Number of questions from this chapter in each year's paper(s).