Lung defense mechanisms Flashcards
1
Q
Defense mechanisms in upper respiratory tract
A
- Co-ordinated swallowing
- Cough reflex
- Protection of lower airway by glottis and epiglottis
- muco-ciliary clearance
2
Q
Roles of mucus
A
Traps particles and facilitates removal
Antimicrobial
Physical barrier
Dilutes chemicals
3
Q
Defense mechanisms in lung periphery
A
Alveolar macrophage
Neutrophils
Normal immune cells
