Which of the following match is correct?
1. Emphysema : reduction of surface area of alveoli and bronchi
2. Pneumonia : occupational disease with asbestos
3. Silicosis : inflammation of alveoli
4. Asthma : excessive secretion of bronchial mucus

Subtopic:  Respiratory Disorders: Part 2 |
 71%
From NCERT
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When a man inhales air containing normal concentration of O2 as well as CO he suffers from suffocation because
1. CO reacts with O2, reducing its percentage in air
2. haemoglobin combines with CO instead of O2 and forms carboxyhaemoglobin
3. CO affects diaphragm and intercostal muscles
4. CO affects the nerves of the lungs

Subtopic:  Respiratory System: Exchange of Gases |
 91%
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Respiration is controlled by
1. medulla oblongata
2. cerebellum
3. hypothalamus
4. cerebrum

Subtopic:  Respiratory System: Regulation of Respiration |
 94%
From NCERT
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Chemosensitive area of respiratory centre medulla is affected by
1. less CO2 and H+ ions
2. less O2 and H+ ions
3. excess CO2 and H+ ions
4. excess O2 and H+ ions.

Subtopic:  Respiratory System: Regulation of Respiration |
 85%
From NCERT
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Oxygen binding to haemoglobin in blood is

1. directly proportional to the concentration of  CO2 in the medium
2. inversely proportional to the concentration of  CO2 in the medium
3. directly proportional to the concentration of CO in the medium
4. independent of the concentration of CO in the medium
Subtopic:  Respiratory System: Transport of Gases Part 1 | Respiratory System: Transport of Gases |
 81%
From NCERT
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In the given diagram, the functional residual capacity will be depicted by:

  
1.  B + F
2.  B + D + F
3.  A - [B + C]
4.  A - E

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 51%
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In the given diagram of the oxygen dissociation curve, under normal physiological conditions, the partial pressure of oxygen at the tissue level is represented by:
   
1. A
2. B
3. C
4. D

Subtopic:  Respiratory System: Transport of Gases |
From NCERT
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Assertion: Gas exchange with water as the respiratory medium is much more demanding than breathing air.
Reason: Air contains much more O2 than water at the same PO2.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Respiratory System: Exchange of Gases |
 52%
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Assertion: In nasal cavity, mucus which lies superficial to the microscopic cilia filters inspired air.
Reason: The cilia of the respiratory epithelium move the secreted mucus and particulate matter towards the external nostrils.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
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Assertion: The terminal bronchiole is the most distal segment of the conducting zone.
Reason: They are the narrowest airways of the lungs.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
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