User: Under normal conditions, the forced expiratory volume is normally _______.

Weegy: This force in addition to the force of expiratory muscles if they are being used will increase pressure in the lung (under normal ... [ Since the volume of ... http://wiki.answers.com/Q/Explain_how_resistance_in_the_air_passages_compliance_elasticity_of_the_lungs_and_the_surface_tension_in_the_alveoli_affect_the_flow_of_air_in_and_out_of_the_lungs ]
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User: Under normal conditions, the forced expiratory volume is normally _______. 50 - 60% of the vital capacity 50 - 60% of the total lung capacity 75 - 85% of the total lung capacity 75 - 85% of the vital capacity