5.7 - Human defence reponces

Skin

Skin

Physical Barrier

Antimicrobial secretion

Microorganisms on skin keep you healthy and extra barrier

Respiratory/Digestive systems

Nose Full of tiny hairs to keep out pathogens

Trachea and bronchi covered in cilia - waft mucus to the throat

Stomach has HCl acid to destroy pathogens

White blood cells

Ingests micro - toxins

Produces antibodies

Produces antitoxins

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