The immune system

• The immune system destroys pathogens and any toxins they produce.
• The immune system protects is incase the same type of pathogen invades us again in the future.
• White blood cells can ingest and destroy pathogens.
• Phagocytosis

  1. The white blood cell detects chemicals releases from the pathogen and moves towards it.
  2. The white blood cell ingests the pathogen and once ingested, the white blood cell uses enzymes to destroy the pathogens.
• Antibodies are protein molecules produces by white blood cells.
• The antibodies stick to the pathogens. This triggers the pathogens to be destroyed.
• Antibodies are extremely specific. Antibodies are developed for a specific pathogen and they will not protect against other pathogens
• Antibodies will remain in the blood for a long time, meaning they can protect is incase we ever got infected again with the same pathogen.
• White blood cells can produce chemicals called antitoxins.
• Antitoxins stick to toxin molecules and prevent them from damaging cells.