Learning Intention 13 Flashcards
To know: - how vaccinations work - how to understand the effect of vaccinations on individuals and society
1
Q
What is an antigen
A
any substance that causes your immune system to produce antibodies against it
2
Q
What is an antibody
A
a protein component of the immune system that ciculatges in the blood, recognises bacteria and viruses and neutralises them
3
Q
Why can the AB blood group receive blood from any donor
A
they lack anti-A and anti-B antibodies, allowing them to accept all blood types without an immune reaction
4
Q
What happens when a person with A-type blood that produces anti-B antibodies in their blood serum receives blood that contains B antigens
A
blood clotting
5
Q
What is a vaccine
A
a weakened version of a disease that is injected into the body in order to produce antibodies against it
6
Q
How do vaccines work
A
- the vaccine enters the body and tiggers an immune system response
- white blood cells produce anti-bodies to attack the microbe
- the microbe has been made harmless
- the body now has defenses against the microbe
- if a microbe then attacks the body, the memory cells produce anti-bodies to attack and destroy it quickly
