— CHAPTER MASTERY · CLASS 11

Breathing and Exchange of Gases Important Questions.

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Key Concepts in Breathing and Exchange of Gases

Respiratory organs in different animalsHuman respiratory system: nasal passage, trachea, bronchi, alveoliMechanism of breathing: inspiration and expirationExchange of gases at alveoli and tissues; partial pressuresTransport of O₂ (oxyhaemoglobin) and CO₂ (bicarbonate); respiratory disorders

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