Mechanics of Breathing
- Previous year questions on Mechanics of Breathing for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Physiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 47 live questions in Mechanics of Breathing.
- 1 of 47 questions carries a verified exam year: 2018.
- Physiology is worth about 17 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.Transthoracic compliance formula:-
- AC = Vt x RR /PEEP
- BC = V/(Alveolar pressure - Atmospheric pressure)✓ Correct answer
- CC = Vt/Pplt - PEEP
- DC = Vt/Pk - Pplt
Q2.Transpulmonary pressure is the difference between:
- AThe bronchus and atmospheric pressure
- BPressure in alveoli and intrapleural pressure✓ Correct answer
- CAtmosphere and intrapleural pressure
- DAtmosphere and intraalveolar pressure
Q3.Normal respiratory compliance is ?
- A200 ml/cm water✓ Correct answer
- B50 ml/cm water
- C100 ml/cm water
- D150 ml/cm water
Q4.When the respiratory muscles are relaxed, the lungs are in which of the following state?
- AFunctional residual capacity (FRC)✓ Correct answer
- BExpiratory reserve volume (ERV)
- CResidual volume (RV)
- DInspiratory reserve volume (IRV)
Q5.In relaxed state, chest wall and lung recoil are balanced at:
- AMinute volume
- BTLC
- CResidual volume
- DFRC✓ Correct answer
Q6.A patient inhales a tidal volume of 500 mL. The intrapleural pressure was measured as - 4 cm of water before inspiration and - 9 cm of water after inspiration. Calculate the pulmonary compliance in this patient:
- A0.1 L/cm✓ Correct answer
- B0.3 L/cm
- C0.2 L/cm
- D0.4 L/cm
Q7.High air way resistance is seen in
- ARespiratory bronchiole
- BTerminal bronchiole
- CIntermediate bronchiole
- DMain bronchus✓ Correct answer
Q8.Pulmonary changes in lateral position in the anaesthetized patient?
- ADependent lung is relatively over ventilated and over-perfused
- BDependent lung is relatively over ventilated and under-perfused
- CDependent lung is relatively under ventilated and over-perfused✓ Correct answer
- DDependent lung is relatively under ventilated and under-perfused
Q9.High airway resistance is seen in
- ARespiratory bronchiole
- BIntermediate bronchiole
- CTerminal bronchiole
- DMain bronchus✓ Correct answer
Q10.A person is having normal lung compliance and increased airway resistance. The most economical way of breathing for him
- ARapid & deep
- BRapid & shallow
- CSlow & deep✓ Correct answer
- DSlow & shallow
Answer key
Q1: B. C = V/(Alveolar pressure - Atmospheric pressure); Q2: B. Pressure in alveoli and intrapleural pressure; Q3: A. 200 ml/cm water; Q4: A. Functional residual capacity (FRC); Q5: D. FRC; Q6: A. 0.1 L/cm; Q7: D. Main bronchus; Q8: C. Dependent lung is relatively under ventilated and over-perfused; Q9: D. Main bronchus; Q10: C. Slow & deep.
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