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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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Important Questions on Breathing and Respiration

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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 23

Figure shown schematic plan of blood circulation in humans with labels A to D . Identify the label and give its function/s.

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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 24
When you hold your breath, the change in concentration of which gas in blood would first lead to the urge to breathe?
 
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 25
Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls -
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 26
Asthma may be attributed to -
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 27
The partial pressure of oxygen in the alveoli of the lungs is
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 28
Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 29
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration because of:
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Alpha Question Bank for Medical: Biology>Chapter 17 - Breathing and Respiration>Exercise-4>Q 30
Which of the following is an occupational respiratory disorder?