Define respiratory Defense System

Multiple Choice

Define respiratory defense system.

A) The respiratory defense system is the resident macrophages that live in the respiratory passageways.
B) The respiratory defense system is a series of filtration mechanisms that prevent airway contamination.
C) The respiratory defense system is the lymph fluid that lines the internal respiratory passageways to prevent invasion by pathogens.
D) The respiratory defense system is the collection of lymph nodes throughout the lungs that filter the air as it is inhaled.
E) The respiratory defense system is the collection of T cells and B cells that reside in the respiratory passageways.