Breathing and Exchange of Gases — NEET/JEE Questions, Notes & Weightage
Class 11 Human Physiology NEET weightage: Very High 1,495 questions
Covers the human respiratory system, the mechanism of breathing (pressure changes), gas exchange and transport (O2/CO2), and respiratory volumes/capacities. Respiratory-volume numericals (tidal volume, vital capacity) and the oxygen dissociation curve are dependable NEET sources.
Practice all 1,495 Breathing and Exchange of Gases questions →Topics inside Breathing and Exchange of Gases
Mechanism of Breathing
396
transport-of-gases
350
Exchange of Gases
238
Respiratory Organs
207
Regulation Of Respiration
143
Human Respiratory System
49
disorders-of-respiratory-system
48
Respiratory Volumes And Capacities
24
transport-of-oxygen
14
respiratory-disorders
1
transport-of-respiratory-gases
1
transport-of-carbon-dioxide
1
Frequently asked questions
Are respiratory volume numbers (tidal volume, vital capacity) really tested?
Yes — knowing the approximate values and how they combine (e.g. vital capacity = tidal + inspiratory reserve + expiratory reserve) is a recurring direct-recall question type.
What is the most important curve/graph in this chapter?
The oxygen-haemoglobin dissociation curve, and how factors like CO2 concentration and pH shift it, is the most frequently referenced graph-based concept.
How is CO2 transported in blood, and is that tested?
Yes — the three forms of CO2 transport (dissolved, as bicarbonate, bound to haemoglobin) and their approximate proportions are commonly asked.