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

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

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   
        

Mark the true statement among the following with reference to normal breathing

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

Mark the incorrect statement in context to oxygen binding to Hb

1.  higher pH

2.  lower temperature

3.  lower pCO₂

4.  higher pO₂

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
 

Incidence of emphysema a respiratory disorder is high in cigarette smokers. In such cases

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
 

From the following relationships between respiratory volume and capacities, mark the correct option.
 

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