Multiple Choice
Which of the following is used to help protect the lungs from infection?
A) Turbulent airflow deposits airborne pathogens on sticky mucosal surfaces.
B) The mucociliary escalator moves trapped organisms away from the lungs by ciliary action.
C) Coughing and sneezing forcefully expel organisms away from the lungs.
D) all of the choices
Correct Answer:
Verified
Correct Answer:
Verified
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