33. Human Body - Respiratory System

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1.
In which part of the human body “Pleura” is found?
2.
For respiration in deep sea, divers use mixture of:
3.
Gargling with a solution of table salt is known to provide relief for a sore throat because ____ ?
4.
Mammalian lungs have an enormous number of minute alveoli (air sacs). This provides:
5.
Which of the following is responsible for exchange of carbon dioxide for oxygen in the lungs?
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