If the nerves in the exiting expiratory area were damaged, how would that affect respiration?
 1) The external intercostal muscles would no longer contract during a passive exhalation.
 2) The internal intercostal muscles would no longer be able to contract during a forceful exhalation.
 3) The diaphragm would no longer be able to contract forcefully.
 4) The person would no longer be able to voluntarily hold their breath.