Which of the following does not occur during breathing?

1.  Brings the air to body temperature

2.  Warms up the air  

3.  Diffusion of gases

4.  Cleans up the air

Subtopic:  Respiratory System: Upper Respiratory Tract |
 54%
From NCERT
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A person suffers punctures in his chest cavity in an accident, without any damage to the lungs, its effect could be

1.  reduced breathing rate

2.  rapid increase in breathing rate

3.  no change in respiration

4.  cessation of breathing

Subtopic:  Respiratory System: Pulmonary Ventilation |
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It is known that exposure to carbon monoxide is harmful to animals because

1.  it reduces CO2 transport

2.  it reduces O2 transport

3.  it increases CO2 transport

4. it increases O2 transport   
        

Subtopic:  Respiratory System: Transport of Gases |
 82%
From NCERT
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Mark the true statement among the following with reference to normal breathing

1. Inspiration is a passive process whereas expiration is an active process.
2. Inspiration is an active process whereas expiration is passive
3. Inspiration and expiration are active processes
4. Inspiration and expiration are passive processes

Subtopic:  Respiratory System: Pulmonary Ventilation |
 71%
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A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

1. total lung capacity

2. tidal volume

3. vital capacity 

4.  inspiratory capacity

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
From NCERT
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Mark the incorrect statement in context to oxygen binding to Hb

1.  higher pH

2.  lower temperature

3.  lower pCO2

4.  higher pO2

Subtopic:  Respiratory System: Transport of Gases |
From NCERT
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Mark the correct pair of muscles involved in the normal breathing in
humans.

1.  External and internal intercostal muscles
2.  Diaphragm and abdominal muscles
3.  Diaphragm and external intercostal muscles
4.  Diaphragm and intercostal muscles
 

Subtopic:  Respiratory System: Pulmonary Ventilation |
 72%
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Incidence of emphysema a respiratory disorder is high in cigarette smokers. In such cases

1.  the bronchioles are found damaged
2.  the alveolar walls are found damaged
3.  the plasma membrane is found damaged
4.  the respiratory muscles are found damaged
 

Subtopic:  Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 |
 91%
From NCERT
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Carbon dioxide  dissociates from carbaminohaemoglobin when

1.  pCO2 is high and pO2 is low
2.  pO2 is high and pCO2 is low
3.  pCO2 and pO2 are equal
4.  None of the above
 

Subtopic:  Respiratory System: Exchange of Gases |
 79%
From NCERT
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From the following relationships between respiratory volume and capacities, mark the correct option.
 

i. Inspiratory Capacity (IC) = Tidal Volume + Residual Volume
ii. Vital Capacity (VC) = Tidal Volume (TV) + Inspiratory Reserve Volume
      (IRV) + Expiratory Reserve Volume (ERV).
iii. Residual Volume (RV) = Vital Capacity (VC) — Inspiratory Reserve
     Volume (IRV)
iv. Tidal Volume (TV) = Inspiratory Capacity (IC) — Inspiratory Reserve
    Volume (IRV)


Codes
1.  (i) Incorrect, (ii) Incorrect, (iii) Incorrect, (iv) Correct
2.  (i) Incorrect, (ii) Correct, (iii) Incorrect, (iv) Correct
3.  (i) Correct, (ii) Correct, (iii) Incorrect, (iv) Correct
4.  (i) Correct, (ii) Incorrect, (iii) Correct, (iv) Incorrect

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 83%
From NCERT
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