Defence Mechanisms Flashcards
1
Q
How is the stomach a defence mechanism?
A
- hydrochloric acid in the stomach which kills pathogens
2
Q
How is the skin a defence mechanism? - 3 points
A
- multilayered
- forms a scab which acts like a plaster
- commensal bacteria on skin which compete with pathogens
3
Q
How is the throat a defence system? - 2 points
A
- mucus membrane (contains goblet cells = produces mucus) -> traps pathogens from entering the lungs
- cilia wafts away pathogens
4
Q
How does smoking affect the throat’s function as a defence system?
A
Smoking = cilia paralysis = can’t waft away pathogens
5
Q
How are the eyes a defence system?
A
Tears contain antibodies
6
Q
How do the ears act as a defence mechanism?
A
- ear wax traps pathogens
7
Q
How does the nose act as a defence mechanism?
A
Hairs in the nose trap pathogens
