Question

2
During quite breathing an individual
breaths about 500ml of air, of this
130 ml reaches the lung alveoli, 150
ml left in air passages called dead air.​

Answer 1

Answer:

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Answer 2

Actually, only about 350 mL of air (out of total 500 mL tidal volume) enters the lung alveoli for the exchange of gases. The remaining 150 mL fills the respiratory passage and is termed as dead air space because no exchange of gases takes place here.