- Created by: amanmessinezis
- Created on: 12-12-17 18:34
Defending against Pathogens - Humans
Physical - Respiratory tract lined with mucus and cilla.
Skin acts a barrier When we get cut, Platelets are used
Platelets - Tiny fragments that are used for clotting. Proteins used for sticking
Chemical - Tears have enzymes
Stomach - HCl
Plants Defence System
Waxy cuticle that acts as a waterproof barrier found in leaves.
Water doesn't come in in case of pathogens entering or any infection in general.
Cell Wall - Filled with Cellulose that acts like a physical barrier.
If pathogens do enter the plant, plant produces antimicrobial substances as a chemical defence.
Phagocytosis - White blood cell engulfs the foreign cell.
Lymphocytes - Produce antibodies
Antitoxins - Limit damage done by invading pathogens.