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#5 | Respiratory System: Exchange of Gases
(Zoology) > Breathing and Exchange of Gases
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Related Practice Questions :
Premature infants may develop respiratory distress and can land up in respiratory failure sometimes needing an intensive care for such infants. This may be due to:
| 1. | the sudden change from the uterine environment to the air |
| 2. | the incomplete development of the lung surface |
| 3. | inadequate production of surfactant |
| 4. | mutations in the genes involved in lung formation |
Level 3: 35%-60%
Hints
Which one of the following is the correct statement for respiration in humans?
| 1. | Cigarette smoking may not lead to inflammation of bronchi |
| 2. | Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration |
| 3. | Workers in grinding and stone breaking industries may suffer, from lung fibrosis |
| 4. | About 90% of carbon dioxide () is carried by haemoglobin as carbamino haemoglobin |
76%
Level 2: 60%+
NEET - 2012
Hints
When a man inhales air containing normal concentration of O2 as well as CO he suffers from suffocation because
| 1. | CO reacts with O2 reducing its percentage in air |
| 2. | haemoglobin combines with CO instead of O2 and forms carboxyhaemoglobin |
| 3. | CO affects diaphragm and intercostal muscles |
| 4. | CO affects the nerves of the lungs. |
90%
Level 1: 80%+
AIIMS - 2008
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