Topic: Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders· Human Physiology

Name the chronic respiratory disorder caused mainly by cigarette smoking :

1. Emphysema

2. Asthma

3. Respiratory acidosis

4. Respiratory alkalosis

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 1 Practice test neet Save WhatsApp Report

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Answer: 1. Emphysema

Key idea: Cigarette smoking mainly causes emphysema.

Smoke damages the alveolar walls, so the surface area for gas exchange falls and the lungs lose elasticity. Asthma is mostly an allergic or inflammatory condition. Respiratory acidosis and alkalosis are changes in blood pH, not diseases of the lungs caused by smoking.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Name the chronic respiratory disorder caused mainly by cigarette smoking :

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