A firefighter enters a room filled with smoke and airborne particles. Her mask is knocked off and she experiences shortness of breath and starts to wheeze. Her bronchospasm may be a good thing because it improves which of the following lung defensive strategies?
c. Neutrophil recruitment
Answer "e" is most correct.
Sedimentation will begin sooner in airways narrowed by bronchoconstriction, as this woman’s acute wheeze suggests has occurred. Although cough, mucus clearance, and PMN recruitment (answers b, c, and d) will also help to clear her inhaled burden of ash, they are not necessarily initiated or enhanced by bronchoconstriction. Antigen presentation (answer a) in such a patient would occur only over the subsequent days of her convalescence, primarily in response to whatever smoke residue remains, its antigenicity, and the recovering strength of her adaptive immune system.