Answer
a) The volume of the chest and lungs will decrease.
b) This decrease in volume will then increase the pressure, which can help to dislodge any food that has been trapped in the trachea.
Work Step by Step
a) The volume of the chest and lungs will decrease.
b) This decrease in volume will then increase the pressure, which can help to dislodge any food that has been trapped in the trachea.