Pulmonary Ventilation and Breathing — NEET Biology
✅ Asked in NEET 2026Arrange the steps of human respiration in correct order: A. Diffusion of O2/CO2 between blood and tissues; B. Diffusion of O2/CO2 across alveolar membrane; C. Pulmonary ventilation; D. Cellular respiration; E. Transport of gases by blood.
Arrange the steps of human respiration in correct order: A. Diffusion of O2/CO2 between blood and tissues; B. Diffusion of O2/CO2 across alveolar membrane; C. Pulmonary ventilation; D. Cellular respiration; E. Transport of gases by blood.
Choose the correct sequence of steps in respiration: 1. Diffusion of gases (O₂ and CO₂) across alveolar membrane 2. Diffusion of O₂ and CO₂ between blood and tissues 3. Transport of gases by blood 4. Pulmonary ventilation 5. Utilisation of O₂ by cells NEET 2023
Answer & NCERT explanation
Correct answer: C — C, B, E, A, D
Human respiration order: pulmonary ventilation (C) -> diffusion across alveolar membrane (B) -> transport by blood (E) -> diffusion between blood and tissues (A) -> cellular respiration in tissues (D).
Read more NCERT concept on the PYQ
Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO₂ rich alveolar air is released out.
Pulmonary ventilation is the physical movement of air into and out of the lungs through breathing. NTA tests whether students understand that breathing draws oxygen-rich atmospheric air in while expelling CO₂-rich alveolar air out. Common mistakes include confusing breathing with gas exchange (which happens in alveoli), or thinking all inspired air reaches the alveoli equally. Remember: breathing is a mechanical process driven by pressure gradients created by diaphragm contraction and relaxation—it's the first step of respiration. Focus on the direction and composition of air movement: inspiration brings fresh air in, expiration removes stale air out. This foundational concept connects the entire respiratory pathway.
What does NCERT say about Breathing or pulmonary ventilation?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.