CB5G The immune system Flashcards
1
Q
What is the immune system
A
The bodys defence against pathogens once they have entered the body
Aims to prevent or minimise disease caused by pathogens
2
Q
How do white blood cells detect pathogens in the body
A
Pathogens have unique antigens on their surface which are detected by specialised receptors white blood cells
3
Q
What are memory lymphocytes
A
When pathogens have been killed some of the lymphocytes with antibodies match that pathogen’s antigens remain in the blood
4
Q
Compare the primary and secondary immune responses
A
The secondary response produces antibodies more rapidly and in higher concentration than in primary response
5
Q
What is a vaccination
A
Deliberate exposure of an individual to foreign antigens
