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Do Now: Read p. 147 2 nd Para. Define these terms: Immunity, pathogenic, antigen , & antibodies. PowerPoint Presentation
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Do Now: Read p. 147 2 nd Para. Define these terms: Immunity, pathogenic, antigen , & antibodies.

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Do Now: Read p. 147 2 nd Para. Define these terms: Immunity, pathogenic, antigen , & antibodies. - PowerPoint PPT Presentation


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Topic :The Immune system. Aim: How does the immune system work to protect the body against diseases?. Do Now: Read p. 147 2 nd Para. Define these terms: Immunity, pathogenic, antigen , & antibodies. What is the function of the immune system? Read p. 147 2 nd Para. & ans,.

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topic the immune system aim how does the immune system work to protect the body against diseases

Topic :The Immune system.Aim: How does the immune system work to protect the body against diseases?

Do Now: Read p. 147 2nd Para. Define these terms: Immunity, pathogenic, antigen , & antibodies.

what is the function of the immune system read p 147 2 nd para ans
What is the function of the immune system? Read p. 147 2nd Para. & ans,
  • What is the function of the immune system?
    • The immune system protects against antigens associated with:
      • Pathogenic organisms.
      • Foreign substances,&
      • Cancer cells.
how does the immune system work examine fig 17 3 p 147 148
How does the immune system work? Examine Fig. 17-3 p. 147&148
  • List the lines of defenses of the immune system that help the body to resist disease.
    • The presence of barriers, ex. The skin, nose hairs,& mucus
    • Hydrochloric acid in the stomach.
    • The ability of the white blood cells to engulf bacteria.
    • The production of antibodies .
what causes an immune reaction response p 148
What causes an immune reaction (response) ?P. 148
  • Invasion of the body by a microbe (ex. Bacteria or virus.) ,causes an antigen antibody reaction.
  • Other types of immune responses include:
    • The immune system may attack the body’s own cells or transplanted organs.
    • During allergic reactions when the body reacts to environmental substances that are usually harmless.