physio EX 9.0 EXERCISE 7 act 1 help!! please

The minute ventilation is _______.
    the amount of air forcefully inhaled in 1 minute
    calculated by multiplying the rate of respiration times TV
    the amount of air left in the lungs after 1 minute
    the amount of air forcefully exhaled in 1 minute


Under normal conditions, the forced expiratory volume is normally _______.
    50 - 60% of the vital capacity
    75 - 85% of the total lung capacity
    50 - 60% of the total lung capacity
    75 - 85% of the vital capacity


When the radius of the airway was decreased, _______.
    expiratory reserve volume decreased
    residual volume decreased
    vital capacity increased
    tidal volume increased
    residual volume decreased and expiratory reserve volume decreased

During forced exhalation, _______.
    the diaphragm contracts
    the internal intercostals contract
    the diaphragm, the internal intercostals and the external intercostals contract
    the external intercostals contract