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 |
 82%
From NCERT
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On an average, a human child breathes ______times/minute.
(1)70-72

(2)24-27

(3)12-16

(4)120-80

Subtopic:  Respiratory System: Pulmonary Ventilation |
 60%
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The breathing rate of human embryo ______times/minute.
(1)70-72

(2)20-25

(3)12-16

(4)None of these

Subtopic:  Respiratory System: Pulmonary Ventilation |
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Which of the following is true regarding breathing rate
(1)It’s minimum in Whale/Elephant

(2)It’s is maximum in shrew

(3)more in child than an adult

(4)All of these

Subtopic:  Respiratory System: Upper Respiratory Tract |
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Which of the following factors will increase the breathing rate
(1)Acidity

(2)decrease in pH

(3)Blood pressure

(4)All of the above

Subtopic:  Respiratory System: Transport of Gases |
 79%
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Which one is odd out regarding breathing rate
(1)heart beat rate

(2)B.M.R

(3)CO2 concentration

(4)Body size

Subtopic:  Respiratory System: Upper Respiratory Tract |
 60%
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Which of the following volume of air cannot be measured by respirometer?
(1)IRV

(2)ERV

(3)RV

(4)Both A and B

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 76%
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