In which of the following locations do coarse crackles mainly occur? A: Bronchiole B: Main bronchus C: Bronchia D: Alveoli E: Terminal bronchioles

Which of the following is true of the pulmonary alveoli() A: Present in all segments of the respiratory portion of the lung B: Site for gaseous exchange C: Lined by single layer of alveolar cells with type II cells being<br/>more numerous than type I cells D: Alveolar pores promote the collateral circulation of air when a<br/>bronchiole is obstructed E: Other choices are correct.

A 4-year-old girl is brought in with severe chest pain, and her<br/>mother fells you that she had been playing with some beads and had<br/>apparently aspirated one (gotten it into her airway) . Where would<br/>you expect it to most likely be? () A: Apicoposterior segmental bronchus of left lung B: Left main bronchus C: Lingular segment of left lung D: Right main bronchus E: Terminal bronchiole of right lung, lower lobe