Assertion: Rarely, emphysema may be caused by the deficiency of the enzyme Alpha 1 antitrypsin deficiency.
Reason: Deficiency of alpha-1 antitrypsin leads to a chronic uninhibited tissue breakdown.

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 Disorders: Part 1 |
 64%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

Assertion (A): Corticosteroids are very effective in the management of bronchial asthma.
Reason (R): Corticosteroids are potent anti-inflammatory agents.


In the light of the above statements choose the correct answer from the options given below:

1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Respiratory Disorders: Part 1 |
 86%
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Assertion: The respiratory system of a bird more efficient than the human respiratory system.
Reason: The bird respiratory system does not mix exhaled air with inhaled air.

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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Most of the aquatic arthropods respire through:

1. diffusion over entire body surface 2. gills
3. tracheae and tracheoles 4. skin
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 77%
From NCERT
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What prevents the entry of food into the larynx during deglutition?
1. A thin elastic cartilaginous flap
2. A thick fibrous cartilaginous flap
3. A thick elastic cartilaginous flap
4. A thin calcified cartilaginous flap

Subtopic:  Respiratory System: Upper Respiratory Tract |
 79%
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The trachea divides into a right and a left primary bronchus at the level of:

1. 2nd thoracic vertebra 2. 3rd thoracic vertebra
3. 5th thoracic vertebra 4. 12th thoracic vertebra
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 95%
From NCERT
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Consider the following two statements:

I: The lungs are situated in the thoracic chamber which is anatomically an air-tight chamber.
II: This arrangement is essential as we cannot directly alter the thoracic volume.
 
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. Both I and II are incorrect
Subtopic:  Respiratory System: Pulmonary Ventilation |
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Regarding pulmonary capacities, the maximum volume of air a person can breathe in after a forced expiration can also be defined as:

1. Total volume of air a person can inspire or expire after a normal inspiration or expiration
2. Volume of air that will remain in the lungs after a normal expiration
3. Maximum volume of air a person can breathe out after a forced inspiration
4. Total volume of air accommodated in the lungs at the end of a forced inspiration
Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 73%
From NCERT
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Which of the following will not be equal in normal physiological conditions?

1.  Partial pressure of oxygen in deoxygenated blood and partial pressure of oxygen in tissues
2.  Partial pressure of carbon dioxide in alveoli and partial pressure of carbon dioxide in oxygenated blood
3.  Partial pressure of oxygen in oxygenated blood and partial pressure of oxygen in alveoli
4.  Partial pressure of carbon dioxide in tissues and partial pressure of carbon dioxide in deoxygenated blood
Subtopic:  Respiratory System: Exchange of Gases |
 69%
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The binding of oxygen with hemoglobin is primarily related to:

1.  Partial pressure of carbon dioxide
2. Partial pressure of oxygen
3. H+ ion concentration in body fluids
4. Presence of 2,3-DPG in erythrocytes
Subtopic:  Respiratory System: Transport of Gases |
 82%
From NCERT
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