Health, disease, immune responses
- Created by: vezting
- Created on: 03-04-16 13:28
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- health, disease and immune responses
- health
- a s tate of pyhsical, mental and social well being which includes absence of disease and infirmities
- disease
- infectious disease is passed between individuals.
- pathogen is an organism that can cuase disease
- a parastie is an organism that lives in or on another organism taking nutrients from the host and causing damage
- a non-infectious disease caused by genteic defects, nutritional deficiencies, lifestlye and environment
- accute disease: symptoms appear rapidly, cause problems fro short periods of time, Eg Common cold
- chronic disease symptoms appear slowly and get progressively worse and cause problems for long periods of time Eg Diabetes
- primary immune responses
- show symptoms of the disease
- when the pathogen enters the boody for the very first time
- response is slow because arent many Placma B lymphocytes that can make the correct antibody
- antigen is foreign
- exposure to pathogen
- B and T lymphocytes produce memiry cells, they remeber the specific antibody for the antigen
- this person is immune until the memory cells die and are no longer in the blood stream
- secondary immune response
- if pathogen renters blood stream, response will be quicker and stronger
- the memory B and T cells divide specialise to create specific antibody for antigen
- Memory cells have limited life span
- health
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