Defence-Systems The job of the non-specific defence system is to prevent pathogens from entering the body.
Skin
- Forms a protective layer covering the body.
- Outer layer consist of dead cells - difficult to penetrate.
- Produces an oily substance called sebum which can kill bacteria.
Nose
- Contains hair and mucus to trap pathogens.
Lungs
- Trachea and bronchi are covered with tiny hairs called cilia covered in mucus to trap pathogens.
- Wafts mucus up throat to go into stomach.
Stomach
- Contains HCl to kill pathogens.