The bodies defence system

• How does the skin defend us from diseases

  Provides a protective barrier

  Produces antimicrobial substances
• How does the nose protect us against diseases.

  • Hairs and mucus serve as physical traps for dust, microbes and other particles
  • This helps prevent the entry of pathogens into the respiratory system
• How do the trachea and bronchi protect us against diseases

  Secrete mucus to trap pathogens

  Lined with cilia to trap pathogens and move them up into the throat and then into the stomach
• How does the stomach protect us from diseases

  Produces hydrochloric acid to kill pathogens