Mechanisms our bodies use to fight disease

Defences:

• Skin acts as a physical barrier to prevent microorganisms from getting in.
• Hair and mucus in your nose tra particles that could contain pathgens.
• The trachea and bronchi secrete mucus to trap pathogens.
• The stomach produces hydrochloric acid that kill pathogens that make it further than the mouth.

How white blood cells fight pathogens:

• Phagocytosis:

1) The phagocyte (white blood cell) detects the antigen (unique molecule marker) on the surface of the bacterium/ pathogen.

2) The…