Which of the following is the function of the conducting part of the respiratory system?
1. clears the foreign particle
2. humidifies air
3. brings air to body temperature
4. All of these

Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 97%
From NCERT
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Which of the following is the part of the thoracic chamber
1. ribs and vertebral column
2. diaphragm
3. sternum
4. All of these

Subtopic:  Respiratory System: Pulmonary Ventilation |
 95%
From NCERT
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In the process of respiration how many times the process of diffusion takes place in respiration
1. 4
2. 3
3. 2
4. 1

Subtopic:  Respiratory System: Exchange of Gases |
 62%
From NCERT
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During inspiration there is __________pressure in the lungs with respect to atmospheric pressure.
(1)positive

(2)negative

(3)neither positive nor negative

(4)All of these

Subtopic:  Respiratory System: Pulmonary Ventilation |
 93%
From NCERT
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Pressure gradient between the lungs and atmosphere is maintained by
(1)diaphragm

(2)external intercostal muscles

(3)internal intercostal muscles

(4)All of these

Subtopic:  Respiratory System: Pulmonary Ventilation |
 92%
From NCERT
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The volume of air involved in breathing movements can be estimated by using
1. ECG
2. Sphygmomanometer
3. spirometer
4. Barometer

Subtopic:  Respiratory System: Pulmonary Ventilation |
 90%
From NCERT
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Which of the following events happen when air enters lungs
1. Ribs and sternum raised
2. volume of thorax increased
3. Diaphragm contracted
4. All of the above

Subtopic:  Respiratory System: Exchange of Gases |
 97%
From NCERT
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Which of the following events happen when air expelled from lungs
1. Ribs and sternum returned to original position
2. volume of thorax decreased
3. Diaphragm relaxed and arched upwards
4. All of the above

Subtopic:  Respiratory System: Exchange of Gases |
 97%
From NCERT
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On an average, a healthy human breathes ______times/minute.
1. 70-72
2. 20-25
3. 12-16
4. 120-80

Subtopic:  Respiratory System: Pulmonary Ventilation |
 81%
From NCERT
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The volume of air expired forcefully after normal inspiration
1. TV+ IRV
2.TV+ERV
3.TV
4. None of these

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 80%
From NCERT
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