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The Immune System. Kevin Nguyen TJ Johnson. Introduction. A system of biological structures that defends organisms from disease causing particles. Organisms can have innate immunity alone or with the addition adaptive immunity. Cnidarians- Jellies.

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The Immune System

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the immune system

The Immune System

Kevin Nguyen

TJ Johnson

  • A system of biological structures that defends organisms from disease causing particles.
  • Organisms can have innate immunity alone or with the addition adaptive immunity.
cnidarians jellies
Cnidarians- Jellies
  • Very primitive immune system. May conduct phagocytosis against foreign particles.
annelida oligochaete earthworm
Annelida- Oligochaete (earthworm)
  • Have innate immunity. Acquires cellular immunity through phagocytosis.
  • May have spontaneous cytotoxicity.
arthopoda fruit flies
Arthopoda- Fruit Flies
  • Develops more complex innate immunity with barrier defenses have hemocytes to perform phagocytosis.
mammalia humans
Mammalia- Humans
  • Have more complex immune system with the addition of adaptive immunity.
  • Have immunological memories of previous infections.
  • Includes various interdependent relationships with other organ systems.
innate immunity
Innate Immunity
  • Occurs in all animals and is immediately active infection exposure. Does not target specific pathogens. No immunological memory.
innate immunity continued
Innate Immunity (Continued)

Barrier Defenses:

Internal Defenses:

adaptive immunity
Adaptive Immunity
  • Found only in vertebrates and targets specific pathogens. Have immunological memory of previous infection exposure.
adaptive immunity continued
Adaptive Immunity (Continued)
  • The cells are lymphocytes and are formed in the bone marrow. These includes B cells and T cells.
t cells recognition and response
T Cells (Recognition and Response)

Helper T Cells

Cytotoxic T Cells

  • Response
  • Killer
immune response
Immune Response
  • Further exposure to a specific antigen from a pathogen causes the increase production of certain antibodies.
immune system structures
Immune System Structures
  • Includes: bone marrow, thymus, spleen, and lymph nodes.
active and passive immunity
Active and Passive Immunity



  • Long lasting immunity, resulted by memorization for specific pathogens.
  • Short term immunity, where antibodies are transferred from mother to offspring.
works cited
Works Cited
  • Reece, Jane, and Lisa Urry. AP Edition Campbell Biology Ninth Edition. San Francisco: Pearson Benjamin Cummings, 2011.
  • Wikipedia. Immune System. 23, March, 2012. Web. 21, March, 2012.


  • Universe Review CA. Anatomy of Animals. Web. 22, March, 2012. <>
  • The Human Body @ NNHS. Immune System Organs and their Functions. Web. 23, March, 2012.


  • PubMed Health. Asthma. Web. 25, March, 2012.