Science, asked by shrishti8649, 11 months ago

explain the external respiratory system in human beings

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Answered by Anonymous

4

Hey mate hope it will help u....

Respiration begins at the nose or mouth , where oxygenated air is brought in before moving down the pharynx , larynx and trachea.....

#BAL

Answered by Anonymous

0

external respiratory is the exchange of gases it take place in alveoli (functional unit of lungs)

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