Which is the first part of the respiratory system?
A. Trachea B. Brochi C. Nasopharynx D. None of this
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3
Answer:
The nose and nasal cavity form the main external opening for the respiratory system and are the first section of the body's airway—the respiratory tract through which air moves.
Explanation:
option d is correct
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0
none of the above
nostrils are the first part
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