Immune system
This presentation is the property of its rightful owner.
Sponsored Links
1 / 10

Immune System PowerPoint PPT Presentation


  • 66 Views
  • Uploaded on
  • Presentation posted in: General

Immune System. Why do we need the immune system? *pathogens* 3 Lines of Defense. First and Second Line of Defense (Innate) (non-specific) (genetic) Physical Barriers 2. Chemical Barriers

Download Presentation

Immune System

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Immune system

Immune System


Immune system

Why do we need the immune system?

*pathogens*

3 Lines of Defense


Immune system

  • First and Second Line of Defense (Innate) (non-specific)

    (genetic)

    • Physical Barriers

      2. Chemical Barriers

      See Table 21.1 in text!


Granulocytes

Granulocytes

3. Cellular Defenses – Defensive Cells

Include:

  • Basophils

  • Mast cells

  • Eosinophils

  • Neutrophils (polymorphonuclear leukocytes)

  • Dendritic cells


Agranulocytes

Agranulocytes

  • Monocytes

  • Lymphocytes

    Natural Killer Cells:targets cells with abnormal or unusual plasma membrane membrane


Immune system

4. Inflammation

Triggers – abrasions, pathogens, chemical irritations, distortion or disturbances of cells, and extreme temps.

Functions –

  • Characterized by cardinal signs:

  • calor

  • rubor

  • tumor

  • dolor

  • Histamine, bradykinins, prostaglandins,


5 fever aka pyrexia

5. Fever (aka pyrexia)

  • Febrile

  • Function

  • pyrogens


6 molecular defenses both innate and adaptive

6. Molecular Defenses (both innate and adaptive!)

  • Interferon

  • Complement

  • Iron-binding proteins

  • Defensins


Questions

Questions

21.14 Name the physical and chemical factors that provide protection from disease in the skin and mucus membranes.

21.15 Which internal defenses provide protection against microbes that penetrate the skin and mucous membranes?

21.16 What is the name for the antimicrobial proteins that prevent viral replication?

21.18 Describe the phases of phagocytosis.

21.19 How are microbes killed following their ingestion by a phagocyte?


  • Login