EASY
11th CBSE
IMPORTANT
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Alveoli are present in 

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Important Questions on Breathing and Exchange of Gases

MEDIUM
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -14
During the transportation of gases, to maintain the ionic balance, chloride ions shift from _____.
EASY
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -15
The trachea terminates into _____.
EASY
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -16
The respiratory centre in brain is stimulated by
MEDIUM
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -17
The inspiratory reserve volume + tidal volume + expiratory reserve volume is the same
MEDIUM
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -18
Between breaths, the intrapleural pressure is approximately _____ mmHg less than atmospheric pressure.
MEDIUM
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -19

The figure shows a diagrammatic view of the human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and/or characteristic.

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EASY
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -20
Pneumotaxic centre is located in
EASY
11th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY BIOLOGY VOL. I For XI Class of 10+2>Chapter 21 - Breathing and Exchange of Gases>TEST QUESTIONS>Q -21
To generate pressure gradients, to facilitate expiration and inspiration, the human body uses the intercostals muscles and the