Each terminal bronchiole gives rise to a cluster of very thin, irregular-walled pouch-like structures called alveoli. Functionally, this structural organisation increases:
1. Rate of diffusion by increasing surface area  
2. Diffusion distance  
3. Air turbulence  
4. Dead space
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 91%
Level 1: 80%+
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Which of the following disease is caused mainly due to cigarette smoking

1. Asthma 2. Emphysema
3. Bronchitis 4. Rhinitis
Subtopic:  Respiratory Disorders: Part 2 |
 96%
Level 1: 80%+
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Asthma is caused by:
1. Inflammation of the bronchi and bronchioles, causing difficulty in breathing
2. Damage to alveolar walls due to smoking
3. Accumulation of fluid in the pleural cavity
4. Swelling of the nasal cavity
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 95%
Level 1: 80%+
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Emphysema is characterized by:
1. Excess mucus production blocking bronchioles.
2. Inflammation of pleural membranes.
3. Constriction of trachea due to excess fluid accumulation.
4. Damage to alveolar walls, reducing surface area for gas exchange.
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 93%
Level 1: 80%+
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Read the following statements and choose the correct option
Statement A: In Emphysema, the surface area of gaseous exchange is reduced 
Statement B: Due to excessive smoking, the walls of alveoli are damaged 
1. Both Statement A and Statement B are incorrect
2. Both Statement A and Statement B are correct
3. Only Statement A is incorrect
4. Only Statement B is incorrect
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 91%
Level 1: 80%+
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Match the disorder given in Column-I with the feature most closely related to the disorder in Column-II and select the correct match from the codes given:

Column-I Column-II
A. Asthma P. Inflammation of bronchi and bronchioles
B. Emphysema Q. Damage to alveolar walls
C. Occupation lung disease R. Pulmonary fibrosis
Codes
A B C
1. P Q R
2. Q P R
3. Q R P
4. R Q P
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 |
 91%
Level 1: 80%+
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Due to increasing airborne allergens, people suffering from respiratory disorder manifest wheezing due to
1. Reduction in the secreation of surfactants by pneumocytes 
2. Proliferation of fibrous tissue and damage of alveolar walls 
3. Inflammation of bronchi and bronchioles 
4. Benign growth on mucous lining of alveoli 
Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 82%
Level 1: 80%+
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