Non-Specific Defence Systems

    Cards (7)

    • Non-specific defence system
      The body's first line of defence against pathogens, preventing them from entering the body
    • Parts of the non-specific defence system
      • Skin
      • Nose and mucus
      • Cilia in trachea and bronchi
      • Stomach acid
    • Skin
      • Protective layer covering the body
      • Outer layer of dead cells difficult for pathogens to penetrate
      • Produces sebum to kill bacteria
      • Can scab over when damaged
    • Nose and mucus
      • Contract pathogens before they enter the breathing system
    • Cilia in trachea and bronchi
      • Covered in mucus
      • Contract pathogens upwards towards the throat to be swallowed
    • Stomach acid
      • Kills pathogens before they can enter the digestive system further
    • Even with the nonspecific defense systems, pathogens can still get into the human body and cause serious disease, so the immune system also protects us