Question

two opposing mechanisms determine alveolar expansion: ______ leads to alveolar expansion, while ______ opposes alveolar expansion. multiple choice negative pleural pressure; lung recoil lung recoil; positive pleural pressure lung recoil; negative pleural pressure positive pleural pressure; lung recoil

Explanation:

Negative pleural pressure creates a suction - like force that pulls the lungs outward, leading to alveolar expansion. Lung recoil is the tendency of the lungs to return to their resting state and opposes alveolar expansion.

Answer:

A. negative pleural pressure; lung recoil