NEET Biology / AI question bank / NCERT Class 11 / Human Physiology
Breathing and Exchange of Gases: NEET questions with solutions
This chapter tests the mechanics of breathing (pressure-driven inspiration and expiration), the exchange and transport of O₂ and CO₂, respiratory volumes and capacities, and the neural regulation of breathing. NEET marks are frequently lost on respiratory-volume arithmetic, on the relative solubility/transport share of O₂ versus CO₂, and on confusing look-alike respiratory disorders.
Also called: human respiratory system · respiration in humans · lung volumes
Questions
10 questions / answers after you pick
- Q1Which one of the following correctly gives the sequence of passages through which inhaled air travels, from the external nostrils to the…
Respiratory organs — human respiratory systemEasySingle correct
- Q2The larynx, commonly called the sound box, lies between the pharynx and the trachea. Which of the following correctly describes a key…
Respiratory organs — larynxEasySingle correct
- Q3During a normal, quiet inspiration in humans, contraction of the diaphragm and the external intercostal muscles brings about a pressure…
Mechanism of breathingMediumSingle correct
- Q4For an adult, take Tidal Volume (TV) = 500 mL, Inspiratory Reserve Volume (IRV) = 2500 mL and Expiratory Reserve Volume (ERV) = 1000 mL…
Respiratory volumes and capacitiesMediumSingle correct
- Q5Efficient gas exchange at the alveoli depends on the properties of the gases themselves as well as on the structure of the membrane they…
Exchange of gasesMediumStatement based
- Q6Read the following two statements about the transport of oxygen in human blood and choose the option that correctly evaluates them.
Transport of gases — oxygenMediumStatement based
- Q7Only a small fraction of the CO₂ produced by tissues travels dissolved in plasma. Which of the following correctly describes how most CO₂ is…
Transport of gases — carbon dioxideHardSingle correct
- Q8Breathing rate is adjusted moment to moment by chemical signals reaching the medulla, not by mechanical stretch alone. Evaluate the…
Regulation of respirationHardAssertion–Reason
- Q9Emphysema is a chronic respiratory disorder commonly caused by long-term cigarette smoking. Which of the following correctly describes what…
Disorders of the respiratory systemEasySingle correct
- Q10Workers in industries involving grinding or stone-breaking are exposed over years to excessive dust in their workplace. What kind of…
Disorders of the respiratory systemMediumSingle correct
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