• Created by: Olivia
  • Created on: 09-05-12 20:24

Unit 6 - allergies


An allergy is an abnormal reponse of the immune system due to an otherwise harmless substance called allergens.

On the first exposure the allergen will; 

  • Be mistaken as a harmless substance by the B- Lymphocytes
  • The B-Lymphocytes produce antibodies designed to match the allergen.
  • They then release and attach themselves to mast cells
  • This sensitises the person to that allergen.
  • On second exposure the mast cells will produce histamine.

Airborne Allergies

Airborne allergies are breathed in and effects the mucus membrane and nasal cavities leading…


No comments have yet been made

Similar Health & Social Care resources:

See all Health & Social Care resources »See all Diagnosis, treatment and prevention strategies resources »