Non- Specific Immune Response

These are cards which will cover the SNAB specific criteria of Non-specific responses to infection including the process of phagocytosis and the different types of responses.

?
  • Created by: Zoe
  • Created on: 07-12-11 17:59

Non-Specific Response

  • Non Specific Response is where the immune system destroys any invading pathogens.
  • There are a number of non specific barriers that can prevent bacteria entering the body such as skin, lysozymes, acidic conditions.
1 of 3

Lysozymes

  • These are enzymes which are released within the eyes, mouth and nose
  • They break down the bacteria cell wall, destroying the bacteria
  • The bacteria cell wall is produced from polysaccharides
  • The enzmye hydrolyses the cell wall consisting of polysaccharides.
2 of 3

Phagocytosis

  • Phagocytes are white blood cells which engluf foreign matter.
  • Neutrophils & macrophages are types of phagocytes.
  • Chemical released by the bacteria attract phagocytes to the site.
  • Once the neutrophils or macrophages reach the site they engulf the foreign matter which has antigens on the surface.
  •  Once the forgein matter has been engulfed the material is enclosed within a vacoule.
  • The vacoule then fuses with the lysosomes which contain enzymes.
  • The lysosome then release the enzymes and destroy the foreign material.
3 of 3

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Cellular processes and structure resources »