Question

select all that apply
select all of the factors that are required for ventilation.

□ pressure in the lung increases
□ a column of air from the pharynx to the alveoli
□ the abdominal cavity sealed
□ adherence of lungs to the thoracic wall by the pleura

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Explanation:

Ventilation requires an unobstructed airway (a column of air from the pharynx to the alveoli) and the adherence of lungs to the thoracic wall by the pleura (which allows the lungs to expand and contract with the thoracic cavity). When pressure in the lung increases, air would be forced out (exhalation is part of ventilation cycle but just increase in pressure alone isn't a “required factor” in the sense of setting up the mechanism. The abdominal cavity being sealed is not relevant as ventilation mainly involves the thoracic cavity and the pleural - lung relationship.

Answer:

a column of air from the pharynx to the alveoli, adherence of lungs to the thoracic wall by the pleura